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Finding the Fourth Proportional to 18,544.80, 27,818.40 and 8,156.48

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Solution

The fourth proportional to 18,544.80, 27,818.40 and 8,156.48 is: 12,235.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,544.80 : 27,818.40 = 8,156.48 : x
  2. Step 2: Convert to fraction form
    18,544.80/27,818.40 = 8,156.48/x
  3. Step 3: Cross multiply
    18,544.80x = 27,818.40 × 8,156.48
  4. Step 4: Simplify right side
    18,544.80x = 226,900,223.23
  5. Step 5: Solve for x
    x = 226,900,223.23/18,544.80
  6. Step 6: Final answer
    x = 12,235.25

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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.