Home / 39,443.52-54,434.28-21,540.20

Finding the Fourth Proportional to 39,443.52, 54,434.28 and 21,540.20

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Solution

The fourth proportional to 39,443.52, 54,434.28 and 21,540.20 is: 29,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.52 : 54,434.28 = 21,540.20 : x
  2. Step 2: Convert to fraction form
    39,443.52/54,434.28 = 21,540.20/x
  3. Step 3: Cross multiply
    39,443.52x = 54,434.28 × 21,540.20
  4. Step 4: Simplify right side
    39,443.52x = 1,172,525,278.06
  5. Step 5: Solve for x
    x = 1,172,525,278.06/39,443.52
  6. Step 6: Final answer
    x = 29,726.69

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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.