Home / 14,805.87-20,432.37-8,091.78

Finding the Fourth Proportional to 14,805.87, 20,432.37 and 8,091.78

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Solution

The fourth proportional to 14,805.87, 20,432.37 and 8,091.78 is: 11,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,805.87 : 20,432.37 = 8,091.78 : x
  2. Step 2: Convert to fraction form
    14,805.87/20,432.37 = 8,091.78/x
  3. Step 3: Cross multiply
    14,805.87x = 20,432.37 × 8,091.78
  4. Step 4: Simplify right side
    14,805.87x = 165,334,189.44
  5. Step 5: Solve for x
    x = 165,334,189.44/14,805.87
  6. Step 6: Final answer
    x = 11,166.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.