Home / 12,742.50-17,584.66-7,155.30

Finding the Fourth Proportional to 12,742.50, 17,584.66 and 7,155.30

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Solution

The fourth proportional to 12,742.50, 17,584.66 and 7,155.30 is: 9,874.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.50 : 17,584.66 = 7,155.30 : x
  2. Step 2: Convert to fraction form
    12,742.50/17,584.66 = 7,155.30/x
  3. Step 3: Cross multiply
    12,742.50x = 17,584.66 × 7,155.30
  4. Step 4: Simplify right side
    12,742.50x = 125,823,517.70
  5. Step 5: Solve for x
    x = 125,823,517.70/12,742.50
  6. Step 6: Final answer
    x = 9,874.32

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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.