Home / 13,557.80-20,321.10-5,234.13

Finding the Fourth Proportional to 13,557.80, 20,321.10 and 5,234.13

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Solution

The fourth proportional to 13,557.80, 20,321.10 and 5,234.13 is: 7,845.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.80 : 20,321.10 = 5,234.13 : x
  2. Step 2: Convert to fraction form
    13,557.80/20,321.10 = 5,234.13/x
  3. Step 3: Cross multiply
    13,557.80x = 20,321.10 × 5,234.13
  4. Step 4: Simplify right side
    13,557.80x = 106,363,279.14
  5. Step 5: Solve for x
    x = 106,363,279.14/13,557.80
  6. Step 6: Final answer
    x = 7,845.17

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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.