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Finding the Fourth Proportional to 20,482.88, 30,695.74 and 15,481.13

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Solution

The fourth proportional to 20,482.88, 30,695.74 and 15,481.13 is: 23,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.88 : 30,695.74 = 15,481.13 : x
  2. Step 2: Convert to fraction form
    20,482.88/30,695.74 = 15,481.13/x
  3. Step 3: Cross multiply
    20,482.88x = 30,695.74 × 15,481.13
  4. Step 4: Simplify right side
    20,482.88x = 475,204,549.20
  5. Step 5: Solve for x
    x = 475,204,549.20/20,482.88
  6. Step 6: Final answer
    x = 23,200.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.