Home / 18,517.20-27,756.36-13,320.24

Finding the Fourth Proportional to 18,517.20, 27,756.36 and 13,320.24

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Solution

The fourth proportional to 18,517.20, 27,756.36 and 13,320.24 is: 19,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.20 : 27,756.36 = 13,320.24 : x
  2. Step 2: Convert to fraction form
    18,517.20/27,756.36 = 13,320.24/x
  3. Step 3: Cross multiply
    18,517.20x = 27,756.36 × 13,320.24
  4. Step 4: Simplify right side
    18,517.20x = 369,721,376.73
  5. Step 5: Solve for x
    x = 369,721,376.73/18,517.20
  6. Step 6: Final answer
    x = 19,966.38

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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.