Home / 21,031.15-29,022.60-11,471.11

Finding the Fourth Proportional to 21,031.15, 29,022.60 and 11,471.11

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Solution

The fourth proportional to 21,031.15, 29,022.60 and 11,471.11 is: 15,829.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.15 : 29,022.60 = 11,471.11 : x
  2. Step 2: Convert to fraction form
    21,031.15/29,022.60 = 11,471.11/x
  3. Step 3: Cross multiply
    21,031.15x = 29,022.60 × 11,471.11
  4. Step 4: Simplify right side
    21,031.15x = 332,921,437.09
  5. Step 5: Solve for x
    x = 332,921,437.09/21,031.15
  6. Step 6: Final answer
    x = 15,829.92

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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.