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Finding the Fourth Proportional to 15,765.04, 21,754.86 and 9,049.24

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Solution

The fourth proportional to 15,765.04, 21,754.86 and 9,049.24 is: 12,487.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.04 : 21,754.86 = 9,049.24 : x
  2. Step 2: Convert to fraction form
    15,765.04/21,754.86 = 9,049.24/x
  3. Step 3: Cross multiply
    15,765.04x = 21,754.86 × 9,049.24
  4. Step 4: Simplify right side
    15,765.04x = 196,864,949.31
  5. Step 5: Solve for x
    x = 196,864,949.31/15,765.04
  6. Step 6: Final answer
    x = 12,487.44

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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.