Home / 21,331.62-29,437.17-12,379.92

Finding the Fourth Proportional to 21,331.62, 29,437.17 and 12,379.92

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Solution

The fourth proportional to 21,331.62, 29,437.17 and 12,379.92 is: 17,084.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.62 : 29,437.17 = 12,379.92 : x
  2. Step 2: Convert to fraction form
    21,331.62/29,437.17 = 12,379.92/x
  3. Step 3: Cross multiply
    21,331.62x = 29,437.17 × 12,379.92
  4. Step 4: Simplify right side
    21,331.62x = 364,429,809.63
  5. Step 5: Solve for x
    x = 364,429,809.63/21,331.62
  6. Step 6: Final answer
    x = 17,084.02

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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.