Home / 14,145.60-21,218.40-12,614.70

Finding the Fourth Proportional to 14,145.60, 21,218.40 and 12,614.70

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Solution

The fourth proportional to 14,145.60, 21,218.40 and 12,614.70 is: 18,922.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.60 : 21,218.40 = 12,614.70 : x
  2. Step 2: Convert to fraction form
    14,145.60/21,218.40 = 12,614.70/x
  3. Step 3: Cross multiply
    14,145.60x = 21,218.40 × 12,614.70
  4. Step 4: Simplify right side
    14,145.60x = 267,663,750.48
  5. Step 5: Solve for x
    x = 267,663,750.48/14,145.60
  6. Step 6: Final answer
    x = 18,922.05

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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.