Home / 12,480,283.40-18,720,425.10-7,105,512.20

Finding the Fourth Proportional to 12,480,283.40, 18,720,425.10 and 7,105,512.20

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Solution

The fourth proportional to 12,480,283.40, 18,720,425.10 and 7,105,512.20 is: 10,658,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,283.40 : 18,720,425.10 = 7,105,512.20 : x
  2. Step 2: Convert to fraction form
    12,480,283.40/18,720,425.10 = 7,105,512.20/x
  3. Step 3: Cross multiply
    12,480,283.40x = 18,720,425.10 × 7,105,512.20
  4. Step 4: Simplify right side
    12,480,283.40x = 133,018,208,937,236.23
  5. Step 5: Solve for x
    x = 133,018,208,937,236.23/12,480,283.40
  6. Step 6: Final answer
    x = 10,658,268.30

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Similar ratio
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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.