Home / 14,119.85-21,179.65-3,589.90

Finding the Fourth Proportional to 14,119.85, 21,179.65 and 3,589.90

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Solution

The fourth proportional to 14,119.85, 21,179.65 and 3,589.90 is: 5,384.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.85 : 21,179.65 = 3,589.90 : x
  2. Step 2: Convert to fraction form
    14,119.85/21,179.65 = 3,589.90/x
  3. Step 3: Cross multiply
    14,119.85x = 21,179.65 × 3,589.90
  4. Step 4: Simplify right side
    14,119.85x = 76,032,763.61
  5. Step 5: Solve for x
    x = 76,032,763.61/14,119.85
  6. Step 6: Final answer
    x = 5,384.82

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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.