Home / 38,666.60-57,999.90-21,127.40

Finding the Fourth Proportional to 38,666.60, 57,999.90 and 21,127.40

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Solution

The fourth proportional to 38,666.60, 57,999.90 and 21,127.40 is: 31,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,666.60 : 57,999.90 = 21,127.40 : x
  2. Step 2: Convert to fraction form
    38,666.60/57,999.90 = 21,127.40/x
  3. Step 3: Cross multiply
    38,666.60x = 57,999.90 × 21,127.40
  4. Step 4: Simplify right side
    38,666.60x = 1,225,387,087.26
  5. Step 5: Solve for x
    x = 1,225,387,087.26/38,666.60
  6. Step 6: Final answer
    x = 31,691.10

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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.