Home / 22,212.92-30,654.76-12,781.52

Finding the Fourth Proportional to 22,212.92, 30,654.76 and 12,781.52

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Solution

The fourth proportional to 22,212.92, 30,654.76 and 12,781.52 is: 17,639.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,212.92 : 30,654.76 = 12,781.52 : x
  2. Step 2: Convert to fraction form
    22,212.92/30,654.76 = 12,781.52/x
  3. Step 3: Cross multiply
    22,212.92x = 30,654.76 × 12,781.52
  4. Step 4: Simplify right side
    22,212.92x = 391,814,428.04
  5. Step 5: Solve for x
    x = 391,814,428.04/22,212.92
  6. Step 6: Final answer
    x = 17,639.03

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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.