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Finding the Fourth Proportional to 18,175.20, 27,280.20 and 9,416.40

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Solution

The fourth proportional to 18,175.20, 27,280.20 and 9,416.40 is: 14,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,175.20 : 27,280.20 = 9,416.40 : x
  2. Step 2: Convert to fraction form
    18,175.20/27,280.20 = 9,416.40/x
  3. Step 3: Cross multiply
    18,175.20x = 27,280.20 × 9,416.40
  4. Step 4: Simplify right side
    18,175.20x = 256,881,275.28
  5. Step 5: Solve for x
    x = 256,881,275.28/18,175.20
  6. Step 6: Final answer
    x = 14,133.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.