Home / 18,761.15-28,131.33-7,675.62

Finding the Fourth Proportional to 18,761.15, 28,131.33 and 7,675.62

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Solution

The fourth proportional to 18,761.15, 28,131.33 and 7,675.62 is: 11,509.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.15 : 28,131.33 = 7,675.62 : x
  2. Step 2: Convert to fraction form
    18,761.15/28,131.33 = 7,675.62/x
  3. Step 3: Cross multiply
    18,761.15x = 28,131.33 × 7,675.62
  4. Step 4: Simplify right side
    18,761.15x = 215,925,399.17
  5. Step 5: Solve for x
    x = 215,925,399.17/18,761.15
  6. Step 6: Final answer
    x = 11,509.18

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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.