Home / 21,329.60-29,425.28-12,371.88

Finding the Fourth Proportional to 21,329.60, 29,425.28 and 12,371.88

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Solution

The fourth proportional to 21,329.60, 29,425.28 and 12,371.88 is: 17,067.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.60 : 29,425.28 = 12,371.88 : x
  2. Step 2: Convert to fraction form
    21,329.60/29,425.28 = 12,371.88/x
  3. Step 3: Cross multiply
    21,329.60x = 29,425.28 × 12,371.88
  4. Step 4: Simplify right side
    21,329.60x = 364,046,033.13
  5. Step 5: Solve for x
    x = 364,046,033.13/21,329.60
  6. Step 6: Final answer
    x = 17,067.64

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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.