Home / 10,712.66-14,872.51-10,391.90

Finding the Fourth Proportional to 10,712.66, 14,872.51 and 10,391.90

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Solution

The fourth proportional to 10,712.66, 14,872.51 and 10,391.90 is: 14,427.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,712.66 : 14,872.51 = 10,391.90 : x
  2. Step 2: Convert to fraction form
    10,712.66/14,872.51 = 10,391.90/x
  3. Step 3: Cross multiply
    10,712.66x = 14,872.51 × 10,391.90
  4. Step 4: Simplify right side
    10,712.66x = 154,553,575.30
  5. Step 5: Solve for x
    x = 154,553,575.30/10,712.66
  6. Step 6: Final answer
    x = 14,427.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.