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Finding the Fourth Proportional to 11,358.08, 15,679.80 and 8,800.10

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Solution

The fourth proportional to 11,358.08, 15,679.80 and 8,800.10 is: 12,148.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,358.08 : 15,679.80 = 8,800.10 : x
  2. Step 2: Convert to fraction form
    11,358.08/15,679.80 = 8,800.10/x
  3. Step 3: Cross multiply
    11,358.08x = 15,679.80 × 8,800.10
  4. Step 4: Simplify right side
    11,358.08x = 137,983,729.58
  5. Step 5: Solve for x
    x = 137,983,729.58/11,358.08
  6. Step 6: Final answer
    x = 12,148.51

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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.