Home / 19,989.76-27,560.20-16,391.52

Finding the Fourth Proportional to 19,989.76, 27,560.20 and 16,391.52

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Solution

The fourth proportional to 19,989.76, 27,560.20 and 16,391.52 is: 22,599.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.76 : 27,560.20 = 16,391.52 : x
  2. Step 2: Convert to fraction form
    19,989.76/27,560.20 = 16,391.52/x
  3. Step 3: Cross multiply
    19,989.76x = 27,560.20 × 16,391.52
  4. Step 4: Simplify right side
    19,989.76x = 451,753,569.50
  5. Step 5: Solve for x
    x = 451,753,569.50/19,989.76
  6. Step 6: Final answer
    x = 22,599.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.