Home / 14,660.10-21,990.15-9,119.70

Finding the Fourth Proportional to 14,660.10, 21,990.15 and 9,119.70

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Solution

The fourth proportional to 14,660.10, 21,990.15 and 9,119.70 is: 13,679.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,660.10 : 21,990.15 = 9,119.70 : x
  2. Step 2: Convert to fraction form
    14,660.10/21,990.15 = 9,119.70/x
  3. Step 3: Cross multiply
    14,660.10x = 21,990.15 × 9,119.70
  4. Step 4: Simplify right side
    14,660.10x = 200,543,570.96
  5. Step 5: Solve for x
    x = 200,543,570.96/14,660.10
  6. Step 6: Final answer
    x = 13,679.55

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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.