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Finding the Fourth Proportional to 17,677.92, 26,515.68 and 12,756.48

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Solution

The fourth proportional to 17,677.92, 26,515.68 and 12,756.48 is: 19,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,677.92 : 26,515.68 = 12,756.48 : x
  2. Step 2: Convert to fraction form
    17,677.92/26,515.68 = 12,756.48/x
  3. Step 3: Cross multiply
    17,677.92x = 26,515.68 × 12,756.48
  4. Step 4: Simplify right side
    17,677.92x = 338,246,741.61
  5. Step 5: Solve for x
    x = 338,246,741.61/17,677.92
  6. Step 6: Final answer
    x = 19,133.85

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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.