Home / 39,287.97-54,218.52-21,384.12

Finding the Fourth Proportional to 39,287.97, 54,218.52 and 21,384.12

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Solution

The fourth proportional to 39,287.97, 54,218.52 and 21,384.12 is: 29,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.97 : 54,218.52 = 21,384.12 : x
  2. Step 2: Convert to fraction form
    39,287.97/54,218.52 = 21,384.12/x
  3. Step 3: Cross multiply
    39,287.97x = 54,218.52 × 21,384.12
  4. Step 4: Simplify right side
    39,287.97x = 1,159,415,337.90
  5. Step 5: Solve for x
    x = 1,159,415,337.90/39,287.97
  6. Step 6: Final answer
    x = 29,510.70

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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.