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Finding the Fourth Proportional to 20,599.56, 30,899.28 and 7,451.88

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Solution

The fourth proportional to 20,599.56, 30,899.28 and 7,451.88 is: 11,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.56 : 30,899.28 = 7,451.88 : x
  2. Step 2: Convert to fraction form
    20,599.56/30,899.28 = 7,451.88/x
  3. Step 3: Cross multiply
    20,599.56x = 30,899.28 × 7,451.88
  4. Step 4: Simplify right side
    20,599.56x = 230,257,726.65
  5. Step 5: Solve for x
    x = 230,257,726.65/20,599.56
  6. Step 6: Final answer
    x = 11,177.80

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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.