Home / 20,292.75-28,000.92-11,340.63

Finding the Fourth Proportional to 20,292.75, 28,000.92 and 11,340.63

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Solution

The fourth proportional to 20,292.75, 28,000.92 and 11,340.63 is: 15,648.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.75 : 28,000.92 = 11,340.63 : x
  2. Step 2: Convert to fraction form
    20,292.75/28,000.92 = 11,340.63/x
  3. Step 3: Cross multiply
    20,292.75x = 28,000.92 × 11,340.63
  4. Step 4: Simplify right side
    20,292.75x = 317,548,073.38
  5. Step 5: Solve for x
    x = 317,548,073.38/20,292.75
  6. Step 6: Final answer
    x = 15,648.35

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Half scale
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Double scale
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1.5x scale

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.