Home / 11,125.53-15,346.31-6,878.61

Finding the Fourth Proportional to 11,125.53, 15,346.31 and 6,878.61

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Solution

The fourth proportional to 11,125.53, 15,346.31 and 6,878.61 is: 9,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.53 : 15,346.31 = 6,878.61 : x
  2. Step 2: Convert to fraction form
    11,125.53/15,346.31 = 6,878.61/x
  3. Step 3: Cross multiply
    11,125.53x = 15,346.31 × 6,878.61
  4. Step 4: Simplify right side
    11,125.53x = 105,561,247.04
  5. Step 5: Solve for x
    x = 105,561,247.04/11,125.53
  6. Step 6: Final answer
    x = 9,488.20

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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.