Home / 21,562.30-29,755.20-12,001.87

Finding the Fourth Proportional to 21,562.30, 29,755.20 and 12,001.87

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Solution

The fourth proportional to 21,562.30, 29,755.20 and 12,001.87 is: 16,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.30 : 29,755.20 = 12,001.87 : x
  2. Step 2: Convert to fraction form
    21,562.30/29,755.20 = 12,001.87/x
  3. Step 3: Cross multiply
    21,562.30x = 29,755.20 × 12,001.87
  4. Step 4: Simplify right side
    21,562.30x = 357,118,042.22
  5. Step 5: Solve for x
    x = 357,118,042.22/21,562.30
  6. Step 6: Final answer
    x = 16,562.15

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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.