Home / 12,953.42-17,874.13-8,171.56

Finding the Fourth Proportional to 12,953.42, 17,874.13 and 8,171.56

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Solution

The fourth proportional to 12,953.42, 17,874.13 and 8,171.56 is: 11,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,953.42 : 17,874.13 = 8,171.56 : x
  2. Step 2: Convert to fraction form
    12,953.42/17,874.13 = 8,171.56/x
  3. Step 3: Cross multiply
    12,953.42x = 17,874.13 × 8,171.56
  4. Step 4: Simplify right side
    12,953.42x = 146,059,504.20
  5. Step 5: Solve for x
    x = 146,059,504.20/12,953.42
  6. Step 6: Final answer
    x = 11,275.75

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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.