Home / 22,431.04-30,950.84-12,997.78

Finding the Fourth Proportional to 22,431.04, 30,950.84 and 12,997.78

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Solution

The fourth proportional to 22,431.04, 30,950.84 and 12,997.78 is: 17,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,431.04 : 30,950.84 = 12,997.78 : x
  2. Step 2: Convert to fraction form
    22,431.04/30,950.84 = 12,997.78/x
  3. Step 3: Cross multiply
    22,431.04x = 30,950.84 × 12,997.78
  4. Step 4: Simplify right side
    22,431.04x = 402,292,209.14
  5. Step 5: Solve for x
    x = 402,292,209.14/22,431.04
  6. Step 6: Final answer
    x = 17,934.62

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Half scale
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Double scale
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Similar ratio
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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.