Home / 18,176.64-25,088.32-11,107.20

Finding the Fourth Proportional to 18,176.64, 25,088.32 and 11,107.20

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Solution

The fourth proportional to 18,176.64, 25,088.32 and 11,107.20 is: 15,330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,176.64 : 25,088.32 = 11,107.20 : x
  2. Step 2: Convert to fraction form
    18,176.64/25,088.32 = 11,107.20/x
  3. Step 3: Cross multiply
    18,176.64x = 25,088.32 × 11,107.20
  4. Step 4: Simplify right side
    18,176.64x = 278,660,987.90
  5. Step 5: Solve for x
    x = 278,660,987.90/18,176.64
  6. Step 6: Final answer
    x = 15,330.72

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Half 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.