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Finding the Fourth Proportional to 18,277.71, 27,400.54 and 8,785.28

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Solution

The fourth proportional to 18,277.71, 27,400.54 and 8,785.28 is: 13,170.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,277.71 : 27,400.54 = 8,785.28 : x
  2. Step 2: Convert to fraction form
    18,277.71/27,400.54 = 8,785.28/x
  3. Step 3: Cross multiply
    18,277.71x = 27,400.54 × 8,785.28
  4. Step 4: Simplify right side
    18,277.71x = 240,721,416.05
  5. Step 5: Solve for x
    x = 240,721,416.05/18,277.71
  6. Step 6: Final answer
    x = 13,170.22

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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.