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Finding the Fourth Proportional to 21,057.59, 29,063.19 and 12,560.22

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Solution

The fourth proportional to 21,057.59, 29,063.19 and 12,560.22 is: 17,335.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.59 : 29,063.19 = 12,560.22 : x
  2. Step 2: Convert to fraction form
    21,057.59/29,063.19 = 12,560.22/x
  3. Step 3: Cross multiply
    21,057.59x = 29,063.19 × 12,560.22
  4. Step 4: Simplify right side
    21,057.59x = 365,040,060.30
  5. Step 5: Solve for x
    x = 365,040,060.30/21,057.59
  6. Step 6: Final answer
    x = 17,335.32

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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.