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Finding the Fourth Proportional to 12,818.13, 17,689.01 and 7,229.13

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Solution

The fourth proportional to 12,818.13, 17,689.01 and 7,229.13 is: 9,976.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.13 : 17,689.01 = 7,229.13 : x
  2. Step 2: Convert to fraction form
    12,818.13/17,689.01 = 7,229.13/x
  3. Step 3: Cross multiply
    12,818.13x = 17,689.01 × 7,229.13
  4. Step 4: Simplify right side
    12,818.13x = 127,876,152.86
  5. Step 5: Solve for x
    x = 127,876,152.86/12,818.13
  6. Step 6: Final answer
    x = 9,976.19

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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.