Home / 11,388.40-15,716.56-8,589.04

Finding the Fourth Proportional to 11,388.40, 15,716.56 and 8,589.04

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Solution

The fourth proportional to 11,388.40, 15,716.56 and 8,589.04 is: 11,853.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,388.40 : 15,716.56 = 8,589.04 : x
  2. Step 2: Convert to fraction form
    11,388.40/15,716.56 = 8,589.04/x
  3. Step 3: Cross multiply
    11,388.40x = 15,716.56 × 8,589.04
  4. Step 4: Simplify right side
    11,388.40x = 134,990,162.50
  5. Step 5: Solve for x
    x = 134,990,162.50/11,388.40
  6. Step 6: Final answer
    x = 11,853.30

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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.