Home / 11,175.48-15,422.52-6,459.78

Finding the Fourth Proportional to 11,175.48, 15,422.52 and 6,459.78

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Solution

The fourth proportional to 11,175.48, 15,422.52 and 6,459.78 is: 8,914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.48 : 15,422.52 = 6,459.78 : x
  2. Step 2: Convert to fraction form
    11,175.48/15,422.52 = 6,459.78/x
  3. Step 3: Cross multiply
    11,175.48x = 15,422.52 × 6,459.78
  4. Step 4: Simplify right side
    11,175.48x = 99,626,086.25
  5. Step 5: Solve for x
    x = 99,626,086.25/11,175.48
  6. Step 6: Final answer
    x = 8,914.70

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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.