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Finding the Fourth Proportional to 15,835.53, 21,853.49 and 8,762.61

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Solution

The fourth proportional to 15,835.53, 21,853.49 and 8,762.61 is: 12,092.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.53 : 21,853.49 = 8,762.61 : x
  2. Step 2: Convert to fraction form
    15,835.53/21,853.49 = 8,762.61/x
  3. Step 3: Cross multiply
    15,835.53x = 21,853.49 × 8,762.61
  4. Step 4: Simplify right side
    15,835.53x = 191,493,566.20
  5. Step 5: Solve for x
    x = 191,493,566.20/15,835.53
  6. Step 6: Final answer
    x = 12,092.65

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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.