Home / 20,532.92-28,335.12-11,580.80

Finding the Fourth Proportional to 20,532.92, 28,335.12 and 11,580.80

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Solution

The fourth proportional to 20,532.92, 28,335.12 and 11,580.80 is: 15,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.92 : 28,335.12 = 11,580.80 : x
  2. Step 2: Convert to fraction form
    20,532.92/28,335.12 = 11,580.80/x
  3. Step 3: Cross multiply
    20,532.92x = 28,335.12 × 11,580.80
  4. Step 4: Simplify right side
    20,532.92x = 328,143,357.70
  5. Step 5: Solve for x
    x = 328,143,357.70/20,532.92
  6. Step 6: Final answer
    x = 15,981.33

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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.