Home / 20,712.15-28,583.57-11,760.48

Finding the Fourth Proportional to 20,712.15, 28,583.57 and 11,760.48

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Solution

The fourth proportional to 20,712.15, 28,583.57 and 11,760.48 is: 16,229.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.15 : 28,583.57 = 11,760.48 : x
  2. Step 2: Convert to fraction form
    20,712.15/28,583.57 = 11,760.48/x
  3. Step 3: Cross multiply
    20,712.15x = 28,583.57 × 11,760.48
  4. Step 4: Simplify right side
    20,712.15x = 336,156,503.31
  5. Step 5: Solve for x
    x = 336,156,503.31/20,712.15
  6. Step 6: Final answer
    x = 16,229.92

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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.