Home / 12,140,928,272.10-18,211,392,408.15-9,385,938,128.10

Finding the Fourth Proportional to 12,140,928,272.10, 18,211,392,408.15 and 9,385,938,128.10

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Solution

The fourth proportional to 12,140,928,272.10, 18,211,392,408.15 and 9,385,938,128.10 is: 14,078,907,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140,928,272.10 : 18,211,392,408.15 = 9,385,938,128.10 : x
  2. Step 2: Convert to fraction form
    12,140,928,272.10/18,211,392,408.15 = 9,385,938,128.10/x
  3. Step 3: Cross multiply
    12,140,928,272.10x = 18,211,392,408.15 × 9,385,938,128.10
  4. Step 4: Simplify right side
    12,140,928,272.10x = 170,931,002,369,445,986,304
  5. Step 5: Solve for x
    x = 170,931,002,369,445,986,304/12,140,928,272.10
  6. Step 6: Final answer
    x = 14,078,907,192.15

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.