Home / 28,555.26-42,808.25-13,743.78

Finding the Fourth Proportional to 28,555.26, 42,808.25 and 13,743.78

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Solution

The fourth proportional to 28,555.26, 42,808.25 and 13,743.78 is: 20,603.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.26 : 42,808.25 = 13,743.78 : x
  2. Step 2: Convert to fraction form
    28,555.26/42,808.25 = 13,743.78/x
  3. Step 3: Cross multiply
    28,555.26x = 42,808.25 × 13,743.78
  4. Step 4: Simplify right side
    28,555.26x = 588,347,170.19
  5. Step 5: Solve for x
    x = 588,347,170.19/28,555.26
  6. Step 6: Final answer
    x = 20,603.81

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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.