Home / 21,507.68-29,680.98-11,948.43

Finding the Fourth Proportional to 21,507.68, 29,680.98 and 11,948.43

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Solution

The fourth proportional to 21,507.68, 29,680.98 and 11,948.43 is: 16,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.68 : 29,680.98 = 11,948.43 : x
  2. Step 2: Convert to fraction form
    21,507.68/29,680.98 = 11,948.43/x
  3. Step 3: Cross multiply
    21,507.68x = 29,680.98 × 11,948.43
  4. Step 4: Simplify right side
    21,507.68x = 354,641,245.57
  5. Step 5: Solve for x
    x = 354,641,245.57/21,507.68
  6. Step 6: Final answer
    x = 16,489.05

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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.