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Finding the Fourth Proportional to 19,175.68, 28,775 and 8,081.68

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Solution

The fourth proportional to 19,175.68, 28,775 and 8,081.68 is: 12,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,175.68 : 28,775 = 8,081.68 : x
  2. Step 2: Convert to fraction form
    19,175.68/28,775 = 8,081.68/x
  3. Step 3: Cross multiply
    19,175.68x = 28,775 × 8,081.68
  4. Step 4: Simplify right side
    19,175.68x = 232,550,342
  5. Step 5: Solve for x
    x = 232,550,342/19,175.68
  6. Step 6: Final answer
    x = 12,127.36

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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.