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Finding the Fourth Proportional to 28,277.88, 42,406.86 and 8,281.86

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Solution

The fourth proportional to 28,277.88, 42,406.86 and 8,281.86 is: 12,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,277.88 : 42,406.86 = 8,281.86 : x
  2. Step 2: Convert to fraction form
    28,277.88/42,406.86 = 8,281.86/x
  3. Step 3: Cross multiply
    28,277.88x = 42,406.86 × 8,281.86
  4. Step 4: Simplify right side
    28,277.88x = 351,207,677.56
  5. Step 5: Solve for x
    x = 351,207,677.56/28,277.88
  6. Step 6: Final answer
    x = 12,419.87

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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.