Home / 39,439.16-54,425.78-21,534.16

Finding the Fourth Proportional to 39,439.16, 54,425.78 and 21,534.16

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Solution

The fourth proportional to 39,439.16, 54,425.78 and 21,534.16 is: 29,717.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.16 : 54,425.78 = 21,534.16 : x
  2. Step 2: Convert to fraction form
    39,439.16/54,425.78 = 21,534.16/x
  3. Step 3: Cross multiply
    39,439.16x = 54,425.78 × 21,534.16
  4. Step 4: Simplify right side
    39,439.16x = 1,172,013,454.64
  5. Step 5: Solve for x
    x = 1,172,013,454.64/39,439.16
  6. Step 6: Final answer
    x = 29,717.00

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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.