Home / 14,739.75-20,340.86-8,115.75

Finding the Fourth Proportional to 14,739.75, 20,340.86 and 8,115.75

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Solution

The fourth proportional to 14,739.75, 20,340.86 and 8,115.75 is: 11,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,739.75 : 20,340.86 = 8,115.75 : x
  2. Step 2: Convert to fraction form
    14,739.75/20,340.86 = 8,115.75/x
  3. Step 3: Cross multiply
    14,739.75x = 20,340.86 × 8,115.75
  4. Step 4: Simplify right side
    14,739.75x = 165,081,293.97
  5. Step 5: Solve for x
    x = 165,081,293.97/14,739.75
  6. Step 6: Final answer
    x = 11,199.74

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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.