Home / 53,155.40-79,731.11-13,174.52

Finding the Fourth Proportional to 53,155.40, 79,731.11 and 13,174.52

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Solution

The fourth proportional to 53,155.40, 79,731.11 and 13,174.52 is: 19,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,155.40 : 79,731.11 = 13,174.52 : x
  2. Step 2: Convert to fraction form
    53,155.40/79,731.11 = 13,174.52/x
  3. Step 3: Cross multiply
    53,155.40x = 79,731.11 × 13,174.52
  4. Step 4: Simplify right side
    53,155.40x = 1,050,419,103.32
  5. Step 5: Solve for x
    x = 1,050,419,103.32/53,155.40
  6. Step 6: Final answer
    x = 19,761.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.