Home / 13,731.36-20,581.17-6,320.28

Finding the Fourth Proportional to 13,731.36, 20,581.17 and 6,320.28

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Solution

The fourth proportional to 13,731.36, 20,581.17 and 6,320.28 is: 9,473.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.36 : 20,581.17 = 6,320.28 : x
  2. Step 2: Convert to fraction form
    13,731.36/20,581.17 = 6,320.28/x
  3. Step 3: Cross multiply
    13,731.36x = 20,581.17 × 6,320.28
  4. Step 4: Simplify right side
    13,731.36x = 130,078,757.13
  5. Step 5: Solve for x
    x = 130,078,757.13/13,731.36
  6. Step 6: Final answer
    x = 9,473.12

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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.