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Finding the Fourth Proportional to 8,621.93, 11,899.65 and 8,059.13

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Solution

The fourth proportional to 8,621.93, 11,899.65 and 8,059.13 is: 11,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.93 : 11,899.65 = 8,059.13 : x
  2. Step 2: Convert to fraction form
    8,621.93/11,899.65 = 8,059.13/x
  3. Step 3: Cross multiply
    8,621.93x = 11,899.65 × 8,059.13
  4. Step 4: Simplify right side
    8,621.93x = 95,900,826.30
  5. Step 5: Solve for x
    x = 95,900,826.30/8,621.93
  6. Step 6: Final answer
    x = 11,122.90

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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.