Home / 39,307.91-54,243.07-21,402.83

Finding the Fourth Proportional to 39,307.91, 54,243.07 and 21,402.83

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Solution

The fourth proportional to 39,307.91, 54,243.07 and 21,402.83 is: 29,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,307.91 : 54,243.07 = 21,402.83 : x
  2. Step 2: Convert to fraction form
    39,307.91/54,243.07 = 21,402.83/x
  3. Step 3: Cross multiply
    39,307.91x = 54,243.07 × 21,402.83
  4. Step 4: Simplify right side
    39,307.91x = 1,160,955,287.99
  5. Step 5: Solve for x
    x = 1,160,955,287.99/39,307.91
  6. Step 6: Final answer
    x = 29,534.90

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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.