Home / 20,781,627.60-31,172,441.40-6,403,414.80

Finding the Fourth Proportional to 20,781,627.60, 31,172,441.40 and 6,403,414.80

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Solution

The fourth proportional to 20,781,627.60, 31,172,441.40 and 6,403,414.80 is: 9,605,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,627.60 : 31,172,441.40 = 6,403,414.80 : x
  2. Step 2: Convert to fraction form
    20,781,627.60/31,172,441.40 = 6,403,414.80/x
  3. Step 3: Cross multiply
    20,781,627.60x = 31,172,441.40 × 6,403,414.80
  4. Step 4: Simplify right side
    20,781,627.60x = 199,610,072,612,892.72
  5. Step 5: Solve for x
    x = 199,610,072,612,892.72/20,781,627.60
  6. Step 6: Final answer
    x = 9,605,122.20

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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.