Home / 13,373.28-20,080.64-12,781.76

Finding the Fourth Proportional to 13,373.28, 20,080.64 and 12,781.76

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Solution

The fourth proportional to 13,373.28, 20,080.64 and 12,781.76 is: 19,192.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.28 : 20,080.64 = 12,781.76 : x
  2. Step 2: Convert to fraction form
    13,373.28/20,080.64 = 12,781.76/x
  3. Step 3: Cross multiply
    13,373.28x = 20,080.64 × 12,781.76
  4. Step 4: Simplify right side
    13,373.28x = 256,665,921.13
  5. Step 5: Solve for x
    x = 256,665,921.13/13,373.28
  6. Step 6: Final answer
    x = 19,192.44

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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.