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Finding the Fourth Proportional to 28,479.44, 42,723.23 and 8,759.66

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Solution

The fourth proportional to 28,479.44, 42,723.23 and 8,759.66 is: 13,140.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.44 : 42,723.23 = 8,759.66 : x
  2. Step 2: Convert to fraction form
    28,479.44/42,723.23 = 8,759.66/x
  3. Step 3: Cross multiply
    28,479.44x = 42,723.23 × 8,759.66
  4. Step 4: Simplify right side
    28,479.44x = 374,240,711.49
  5. Step 5: Solve for x
    x = 374,240,711.49/28,479.44
  6. Step 6: Final answer
    x = 13,140.74

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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.