Home / 12,436.13-17,156.40-8,181.71

Finding the Fourth Proportional to 12,436.13, 17,156.40 and 8,181.71

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Solution

The fourth proportional to 12,436.13, 17,156.40 and 8,181.71 is: 11,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.13 : 17,156.40 = 8,181.71 : x
  2. Step 2: Convert to fraction form
    12,436.13/17,156.40 = 8,181.71/x
  3. Step 3: Cross multiply
    12,436.13x = 17,156.40 × 8,181.71
  4. Step 4: Simplify right side
    12,436.13x = 140,368,689.44
  5. Step 5: Solve for x
    x = 140,368,689.44/12,436.13
  6. Step 6: Final answer
    x = 11,287.17

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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.