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Finding the Fourth Proportional to 13,179.93, 18,187.65 and 7,514.82

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Solution

The fourth proportional to 13,179.93, 18,187.65 and 7,514.82 is: 10,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.93 : 18,187.65 = 7,514.82 : x
  2. Step 2: Convert to fraction form
    13,179.93/18,187.65 = 7,514.82/x
  3. Step 3: Cross multiply
    13,179.93x = 18,187.65 × 7,514.82
  4. Step 4: Simplify right side
    13,179.93x = 136,676,915.97
  5. Step 5: Solve for x
    x = 136,676,915.97/13,179.93
  6. Step 6: Final answer
    x = 10,370.08

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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.