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Finding the Fourth Proportional to 18,799.76, 28,199.69 and 7,560.28

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Solution

The fourth proportional to 18,799.76, 28,199.69 and 7,560.28 is: 11,340.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,799.76 : 28,199.69 = 7,560.28 : x
  2. Step 2: Convert to fraction form
    18,799.76/28,199.69 = 7,560.28/x
  3. Step 3: Cross multiply
    18,799.76x = 28,199.69 × 7,560.28
  4. Step 4: Simplify right side
    18,799.76x = 213,197,552.31
  5. Step 5: Solve for x
    x = 213,197,552.31/18,799.76
  6. Step 6: Final answer
    x = 11,340.44

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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.