Home / 15,186.72-20,957.04-8,472.24

Finding the Fourth Proportional to 15,186.72, 20,957.04 and 8,472.24

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Solution

The fourth proportional to 15,186.72, 20,957.04 and 8,472.24 is: 11,691.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.72 : 20,957.04 = 8,472.24 : x
  2. Step 2: Convert to fraction form
    15,186.72/20,957.04 = 8,472.24/x
  3. Step 3: Cross multiply
    15,186.72x = 20,957.04 × 8,472.24
  4. Step 4: Simplify right side
    15,186.72x = 177,553,072.57
  5. Step 5: Solve for x
    x = 177,553,072.57/15,186.72
  6. Step 6: Final answer
    x = 11,691.34

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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.