Home / 13,686.52-20,517.58-5,372.48

Finding the Fourth Proportional to 13,686.52, 20,517.58 and 5,372.48

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Solution

The fourth proportional to 13,686.52, 20,517.58 and 5,372.48 is: 8,053.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.52 : 20,517.58 = 5,372.48 : x
  2. Step 2: Convert to fraction form
    13,686.52/20,517.58 = 5,372.48/x
  3. Step 3: Cross multiply
    13,686.52x = 20,517.58 × 5,372.48
  4. Step 4: Simplify right side
    13,686.52x = 110,230,288.20
  5. Step 5: Solve for x
    x = 110,230,288.20/13,686.52
  6. Step 6: Final answer
    x = 8,053.93

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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.