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Finding the Fourth Proportional to 11,473.80, 15,810.84 and 8,489.76

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Solution

The fourth proportional to 11,473.80, 15,810.84 and 8,489.76 is: 11,698.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,473.80 : 15,810.84 = 8,489.76 : x
  2. Step 2: Convert to fraction form
    11,473.80/15,810.84 = 8,489.76/x
  3. Step 3: Cross multiply
    11,473.80x = 15,810.84 × 8,489.76
  4. Step 4: Simplify right side
    11,473.80x = 134,230,237.00
  5. Step 5: Solve for x
    x = 134,230,237.00/11,473.80
  6. Step 6: Final answer
    x = 11,698.85

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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.