Home / 18,287.62-25,219.45-11,118.77

Finding the Fourth Proportional to 18,287.62, 25,219.45 and 11,118.77

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Solution

The fourth proportional to 18,287.62, 25,219.45 and 11,118.77 is: 15,333.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.62 : 25,219.45 = 11,118.77 : x
  2. Step 2: Convert to fraction form
    18,287.62/25,219.45 = 11,118.77/x
  3. Step 3: Cross multiply
    18,287.62x = 25,219.45 × 11,118.77
  4. Step 4: Simplify right side
    18,287.62x = 280,409,246.45
  5. Step 5: Solve for x
    x = 280,409,246.45/18,287.62
  6. Step 6: Final answer
    x = 15,333.28

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Half scale
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Double scale
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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.