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Finding the Fourth Proportional to 15,163.19, 20,924.99 and 8,449.10

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Solution

The fourth proportional to 15,163.19, 20,924.99 and 8,449.10 is: 11,659.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.19 : 20,924.99 = 8,449.10 : x
  2. Step 2: Convert to fraction form
    15,163.19/20,924.99 = 8,449.10/x
  3. Step 3: Cross multiply
    15,163.19x = 20,924.99 × 8,449.10
  4. Step 4: Simplify right side
    15,163.19x = 176,797,296.29
  5. Step 5: Solve for x
    x = 176,797,296.29/15,163.19
  6. Step 6: Final answer
    x = 11,659.64

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Half scale
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Double scale
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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.