Home / 28,520.92-42,752.66-11,890.16

Finding the Fourth Proportional to 28,520.92, 42,752.66 and 11,890.16

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Solution

The fourth proportional to 28,520.92, 42,752.66 and 11,890.16 is: 17,823.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.92 : 42,752.66 = 11,890.16 : x
  2. Step 2: Convert to fraction form
    28,520.92/42,752.66 = 11,890.16/x
  3. Step 3: Cross multiply
    28,520.92x = 42,752.66 × 11,890.16
  4. Step 4: Simplify right side
    28,520.92x = 508,335,694.61
  5. Step 5: Solve for x
    x = 508,335,694.61/28,520.92
  6. Step 6: Final answer
    x = 17,823.26

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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.