Home / 18,761.46-28,142.25-7,668.15

Finding the Fourth Proportional to 18,761.46, 28,142.25 and 7,668.15

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Solution

The fourth proportional to 18,761.46, 28,142.25 and 7,668.15 is: 11,502.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.46 : 28,142.25 = 7,668.15 : x
  2. Step 2: Convert to fraction form
    18,761.46/28,142.25 = 7,668.15/x
  3. Step 3: Cross multiply
    18,761.46x = 28,142.25 × 7,668.15
  4. Step 4: Simplify right side
    18,761.46x = 215,798,994.34
  5. Step 5: Solve for x
    x = 215,798,994.34/18,761.46
  6. Step 6: Final answer
    x = 11,502.25

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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.