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Finding the Fourth Proportional to 28,045.85, 42,068.77 and 8,324.57

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Solution

The fourth proportional to 28,045.85, 42,068.77 and 8,324.57 is: 12,486.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.85 : 42,068.77 = 8,324.57 : x
  2. Step 2: Convert to fraction form
    28,045.85/42,068.77 = 8,324.57/x
  3. Step 3: Cross multiply
    28,045.85x = 42,068.77 × 8,324.57
  4. Step 4: Simplify right side
    28,045.85x = 350,204,505.04
  5. Step 5: Solve for x
    x = 350,204,505.04/28,045.85
  6. Step 6: Final answer
    x = 12,486.86

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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.