Home / 13,581.28-20,373.36-5,790.88

Finding the Fourth Proportional to 13,581.28, 20,373.36 and 5,790.88

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Solution

The fourth proportional to 13,581.28, 20,373.36 and 5,790.88 is: 8,686.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.28 : 20,373.36 = 5,790.88 : x
  2. Step 2: Convert to fraction form
    13,581.28/20,373.36 = 5,790.88/x
  3. Step 3: Cross multiply
    13,581.28x = 20,373.36 × 5,790.88
  4. Step 4: Simplify right side
    13,581.28x = 117,979,682.96
  5. Step 5: Solve for x
    x = 117,979,682.96/13,581.28
  6. Step 6: Final answer
    x = 8,686.93

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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.