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Finding the Fourth Proportional to 18,256.48, 27,367.92 and 8,891.20

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Solution

The fourth proportional to 18,256.48, 27,367.92 and 8,891.20 is: 13,328.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,256.48 : 27,367.92 = 8,891.20 : x
  2. Step 2: Convert to fraction form
    18,256.48/27,367.92 = 8,891.20/x
  3. Step 3: Cross multiply
    18,256.48x = 27,367.92 × 8,891.20
  4. Step 4: Simplify right side
    18,256.48x = 243,333,650.30
  5. Step 5: Solve for x
    x = 243,333,650.30/18,256.48
  6. Step 6: Final answer
    x = 13,328.62

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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.