Home / 22,428.76-30,951.28-12,998.20

Finding the Fourth Proportional to 22,428.76, 30,951.28 and 12,998.20

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Solution

The fourth proportional to 22,428.76, 30,951.28 and 12,998.20 is: 17,937.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,428.76 : 30,951.28 = 12,998.20 : x
  2. Step 2: Convert to fraction form
    22,428.76/30,951.28 = 12,998.20/x
  3. Step 3: Cross multiply
    22,428.76x = 30,951.28 × 12,998.20
  4. Step 4: Simplify right side
    22,428.76x = 402,310,927.70
  5. Step 5: Solve for x
    x = 402,310,927.70/22,428.76
  6. Step 6: Final answer
    x = 17,937.28

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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.