Home / 28,218.71-42,290.93-15,744.61

Finding the Fourth Proportional to 28,218.71, 42,290.93 and 15,744.61

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Solution

The fourth proportional to 28,218.71, 42,290.93 and 15,744.61 is: 23,596.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.71 : 42,290.93 = 15,744.61 : x
  2. Step 2: Convert to fraction form
    28,218.71/42,290.93 = 15,744.61/x
  3. Step 3: Cross multiply
    28,218.71x = 42,290.93 × 15,744.61
  4. Step 4: Simplify right side
    28,218.71x = 665,853,909.21
  5. Step 5: Solve for x
    x = 665,853,909.21/28,218.71
  6. Step 6: Final answer
    x = 23,596.19

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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.