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Finding the Fourth Proportional to 18,844.60, 28,265.82 and 7,156.84

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Solution

The fourth proportional to 18,844.60, 28,265.82 and 7,156.84 is: 10,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844.60 : 28,265.82 = 7,156.84 : x
  2. Step 2: Convert to fraction form
    18,844.60/28,265.82 = 7,156.84/x
  3. Step 3: Cross multiply
    18,844.60x = 28,265.82 × 7,156.84
  4. Step 4: Simplify right side
    18,844.60x = 202,293,951.21
  5. Step 5: Solve for x
    x = 202,293,951.21/18,844.60
  6. Step 6: Final answer
    x = 10,734.85

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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.