Home / 12,318.48-17,006.40-8,134.02

Finding the Fourth Proportional to 12,318.48, 17,006.40 and 8,134.02

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Solution

The fourth proportional to 12,318.48, 17,006.40 and 8,134.02 is: 11,229.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.48 : 17,006.40 = 8,134.02 : x
  2. Step 2: Convert to fraction form
    12,318.48/17,006.40 = 8,134.02/x
  3. Step 3: Cross multiply
    12,318.48x = 17,006.40 × 8,134.02
  4. Step 4: Simplify right side
    12,318.48x = 138,330,397.73
  5. Step 5: Solve for x
    x = 138,330,397.73/12,318.48
  6. Step 6: Final answer
    x = 11,229.50

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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.