Home / 22,138.38-30,552.80-12,708.77

Finding the Fourth Proportional to 22,138.38, 30,552.80 and 12,708.77

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Solution

The fourth proportional to 22,138.38, 30,552.80 and 12,708.77 is: 17,539.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.38 : 30,552.80 = 12,708.77 : x
  2. Step 2: Convert to fraction form
    22,138.38/30,552.80 = 12,708.77/x
  3. Step 3: Cross multiply
    22,138.38x = 30,552.80 × 12,708.77
  4. Step 4: Simplify right side
    22,138.38x = 388,288,291.75
  5. Step 5: Solve for x
    x = 388,288,291.75/22,138.38
  6. Step 6: Final answer
    x = 17,539.15

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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.