Home / 28,486.80-42,732.36-8,766.72

Finding the Fourth Proportional to 28,486.80, 42,732.36 and 8,766.72

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Solution

The fourth proportional to 28,486.80, 42,732.36 and 8,766.72 is: 13,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.80 : 42,732.36 = 8,766.72 : x
  2. Step 2: Convert to fraction form
    28,486.80/42,732.36 = 8,766.72/x
  3. Step 3: Cross multiply
    28,486.80x = 42,732.36 × 8,766.72
  4. Step 4: Simplify right side
    28,486.80x = 374,622,635.06
  5. Step 5: Solve for x
    x = 374,622,635.06/28,486.80
  6. Step 6: Final answer
    x = 13,150.74

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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.