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Finding the Fourth Proportional to 15,239.80, 21,032 and 8,526.08

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Solution

The fourth proportional to 15,239.80, 21,032 and 8,526.08 is: 11,766.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.80 : 21,032 = 8,526.08 : x
  2. Step 2: Convert to fraction form
    15,239.80/21,032 = 8,526.08/x
  3. Step 3: Cross multiply
    15,239.80x = 21,032 × 8,526.08
  4. Step 4: Simplify right side
    15,239.80x = 179,320,514.56
  5. Step 5: Solve for x
    x = 179,320,514.56/15,239.80
  6. Step 6: Final answer
    x = 11,766.59

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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.