Home / 28,216.70-42,287.92-15,742.60

Finding the Fourth Proportional to 28,216.70, 42,287.92 and 15,742.60

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Solution

The fourth proportional to 28,216.70, 42,287.92 and 15,742.60 is: 23,593.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.70 : 42,287.92 = 15,742.60 : x
  2. Step 2: Convert to fraction form
    28,216.70/42,287.92 = 15,742.60/x
  3. Step 3: Cross multiply
    28,216.70x = 42,287.92 × 15,742.60
  4. Step 4: Simplify right side
    28,216.70x = 665,721,990.74
  5. Step 5: Solve for x
    x = 665,721,990.74/28,216.70
  6. Step 6: Final answer
    x = 23,593.19

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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.