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Finding the Fourth Proportional to 28,529.66, 42,799.11 and 8,803.61

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Solution

The fourth proportional to 28,529.66, 42,799.11 and 8,803.61 is: 13,206.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,529.66 : 42,799.11 = 8,803.61 : x
  2. Step 2: Convert to fraction form
    28,529.66/42,799.11 = 8,803.61/x
  3. Step 3: Cross multiply
    28,529.66x = 42,799.11 × 8,803.61
  4. Step 4: Simplify right side
    28,529.66x = 376,786,458.79
  5. Step 5: Solve for x
    x = 376,786,458.79/28,529.66
  6. Step 6: Final answer
    x = 13,206.84

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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.