Home / 14,680.78-20,259.12-8,392.75

Finding the Fourth Proportional to 14,680.78, 20,259.12 and 8,392.75

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Solution

The fourth proportional to 14,680.78, 20,259.12 and 8,392.75 is: 11,581.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,680.78 : 20,259.12 = 8,392.75 : x
  2. Step 2: Convert to fraction form
    14,680.78/20,259.12 = 8,392.75/x
  3. Step 3: Cross multiply
    14,680.78x = 20,259.12 × 8,392.75
  4. Step 4: Simplify right side
    14,680.78x = 170,029,729.38
  5. Step 5: Solve for x
    x = 170,029,729.38/14,680.78
  6. Step 6: Final answer
    x = 11,581.79

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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.