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Finding the Fourth Proportional to 12,818.70, 19,207.17 and 12,332.70

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Solution

The fourth proportional to 12,818.70, 19,207.17 and 12,332.70 is: 18,478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.70 : 19,207.17 = 12,332.70 : x
  2. Step 2: Convert to fraction form
    12,818.70/19,207.17 = 12,332.70/x
  3. Step 3: Cross multiply
    12,818.70x = 19,207.17 × 12,332.70
  4. Step 4: Simplify right side
    12,818.70x = 236,876,265.46
  5. Step 5: Solve for x
    x = 236,876,265.46/12,818.70
  6. Step 6: Final answer
    x = 18,478.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.