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Finding the Fourth Proportional to 15,799.52, 21,803.76 and 9,086.42

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Solution

The fourth proportional to 15,799.52, 21,803.76 and 9,086.42 is: 12,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,799.52 : 21,803.76 = 9,086.42 : x
  2. Step 2: Convert to fraction form
    15,799.52/21,803.76 = 9,086.42/x
  3. Step 3: Cross multiply
    15,799.52x = 21,803.76 × 9,086.42
  4. Step 4: Simplify right side
    15,799.52x = 198,118,120.94
  5. Step 5: Solve for x
    x = 198,118,120.94/15,799.52
  6. Step 6: Final answer
    x = 12,539.50

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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.