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Finding the Fourth Proportional to 28,186, 42,286.02 and 10,655.92

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Solution

The fourth proportional to 28,186, 42,286.02 and 10,655.92 is: 15,986.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186 : 42,286.02 = 10,655.92 : x
  2. Step 2: Convert to fraction form
    28,186/42,286.02 = 10,655.92/x
  3. Step 3: Cross multiply
    28,186x = 42,286.02 × 10,655.92
  4. Step 4: Simplify right side
    28,186x = 450,596,446.24
  5. Step 5: Solve for x
    x = 450,596,446.24/28,186
  6. Step 6: Final answer
    x = 15,986.53

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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.