Home / 10,987.12-16,481.08-5,648.87

Finding the Fourth Proportional to 10,987.12, 16,481.08 and 5,648.87

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Solution

The fourth proportional to 10,987.12, 16,481.08 and 5,648.87 is: 8,473.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.12 : 16,481.08 = 5,648.87 : x
  2. Step 2: Convert to fraction form
    10,987.12/16,481.08 = 5,648.87/x
  3. Step 3: Cross multiply
    10,987.12x = 16,481.08 × 5,648.87
  4. Step 4: Simplify right side
    10,987.12x = 93,099,395.97
  5. Step 5: Solve for x
    x = 93,099,395.97/10,987.12
  6. Step 6: Final answer
    x = 8,473.51

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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.