Home / 12,101.28-18,152.10-3,780.96

Finding the Fourth Proportional to 12,101.28, 18,152.10 and 3,780.96

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Solution

The fourth proportional to 12,101.28, 18,152.10 and 3,780.96 is: 5,671.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.28 : 18,152.10 = 3,780.96 : x
  2. Step 2: Convert to fraction form
    12,101.28/18,152.10 = 3,780.96/x
  3. Step 3: Cross multiply
    12,101.28x = 18,152.10 × 3,780.96
  4. Step 4: Simplify right side
    12,101.28x = 68,632,364.02
  5. Step 5: Solve for x
    x = 68,632,364.02/12,101.28
  6. Step 6: Final answer
    x = 5,671.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.