Home / 20,237.20-27,915.27-15,753.85

Finding the Fourth Proportional to 20,237.20, 27,915.27 and 15,753.85

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Solution

The fourth proportional to 20,237.20, 27,915.27 and 15,753.85 is: 21,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.20 : 27,915.27 = 15,753.85 : x
  2. Step 2: Convert to fraction form
    20,237.20/27,915.27 = 15,753.85/x
  3. Step 3: Cross multiply
    20,237.20x = 27,915.27 × 15,753.85
  4. Step 4: Simplify right side
    20,237.20x = 439,772,976.29
  5. Step 5: Solve for x
    x = 439,772,976.29/20,237.20
  6. Step 6: Final answer
    x = 21,730.92

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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.