Home / 21,713.56-29,966.15-12,154.34

Finding the Fourth Proportional to 21,713.56, 29,966.15 and 12,154.34

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Solution

The fourth proportional to 21,713.56, 29,966.15 and 12,154.34 is: 16,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,713.56 : 29,966.15 = 12,154.34 : x
  2. Step 2: Convert to fraction form
    21,713.56/29,966.15 = 12,154.34/x
  3. Step 3: Cross multiply
    21,713.56x = 29,966.15 × 12,154.34
  4. Step 4: Simplify right side
    21,713.56x = 364,218,775.59
  5. Step 5: Solve for x
    x = 364,218,775.59/21,713.56
  6. Step 6: Final answer
    x = 16,773.79

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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.