Home / 39,439.13-54,425.58-21,534.08

Finding the Fourth Proportional to 39,439.13, 54,425.58 and 21,534.08

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Solution

The fourth proportional to 39,439.13, 54,425.58 and 21,534.08 is: 29,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.13 : 54,425.58 = 21,534.08 : x
  2. Step 2: Convert to fraction form
    39,439.13/54,425.58 = 21,534.08/x
  3. Step 3: Cross multiply
    39,439.13x = 54,425.58 × 21,534.08
  4. Step 4: Simplify right side
    39,439.13x = 1,172,004,793.77
  5. Step 5: Solve for x
    x = 1,172,004,793.77/39,439.13
  6. Step 6: Final answer
    x = 29,716.80

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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.