Home / 21,073.59-29,080.39-12,121.25

Finding the Fourth Proportional to 21,073.59, 29,080.39 and 12,121.25

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Solution

The fourth proportional to 21,073.59, 29,080.39 and 12,121.25 is: 16,726.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.59 : 29,080.39 = 12,121.25 : x
  2. Step 2: Convert to fraction form
    21,073.59/29,080.39 = 12,121.25/x
  3. Step 3: Cross multiply
    21,073.59x = 29,080.39 × 12,121.25
  4. Step 4: Simplify right side
    21,073.59x = 352,490,565.21
  5. Step 5: Solve for x
    x = 352,490,565.21/21,073.59
  6. Step 6: Final answer
    x = 16,726.65

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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.