Home / 15,038,489,420.21-20,753,675,477.47-9,017,975,021.15

Finding the Fourth Proportional to 15,038,489,420.21, 20,753,675,477.47 and 9,017,975,021.15

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Solution

The fourth proportional to 15,038,489,420.21, 20,753,675,477.47 and 9,017,975,021.15 is: 12,445,141,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,038,489,420.21 : 20,753,675,477.47 = 9,017,975,021.15 : x
  2. Step 2: Convert to fraction form
    15,038,489,420.21/20,753,675,477.47 = 9,017,975,021.15/x
  3. Step 3: Cross multiply
    15,038,489,420.21x = 20,753,675,477.47 × 9,017,975,021.15
  4. Step 4: Simplify right side
    15,038,489,420.21x = 187,156,127,052,931,727,360
  5. Step 5: Solve for x
    x = 187,156,127,052,931,727,360/15,038,489,420.21
  6. Step 6: Final answer
    x = 12,445,141,385.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.