Home / 21,516.56-29,676.39-15,567.92

Finding the Fourth Proportional to 21,516.56, 29,676.39 and 15,567.92

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Solution

The fourth proportional to 21,516.56, 29,676.39 and 15,567.92 is: 21,471.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.56 : 29,676.39 = 15,567.92 : x
  2. Step 2: Convert to fraction form
    21,516.56/29,676.39 = 15,567.92/x
  3. Step 3: Cross multiply
    21,516.56x = 29,676.39 × 15,567.92
  4. Step 4: Simplify right side
    21,516.56x = 461,999,517.03
  5. Step 5: Solve for x
    x = 461,999,517.03/21,516.56
  6. Step 6: Final answer
    x = 21,471.82

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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.