Home / 28,702.01-39,609.25-15,781.83

Finding the Fourth Proportional to 28,702.01, 39,609.25 and 15,781.83

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Solution

The fourth proportional to 28,702.01, 39,609.25 and 15,781.83 is: 21,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.01 : 39,609.25 = 15,781.83 : x
  2. Step 2: Convert to fraction form
    28,702.01/39,609.25 = 15,781.83/x
  3. Step 3: Cross multiply
    28,702.01x = 39,609.25 × 15,781.83
  4. Step 4: Simplify right side
    28,702.01x = 625,106,449.93
  5. Step 5: Solve for x
    x = 625,106,449.93/28,702.01
  6. Step 6: Final answer
    x = 21,779.19

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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.