Home / 18,937.40-28,401.37-7,847.15

Finding the Fourth Proportional to 18,937.40, 28,401.37 and 7,847.15

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Solution

The fourth proportional to 18,937.40, 28,401.37 and 7,847.15 is: 11,768.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.40 : 28,401.37 = 7,847.15 : x
  2. Step 2: Convert to fraction form
    18,937.40/28,401.37 = 7,847.15/x
  3. Step 3: Cross multiply
    18,937.40x = 28,401.37 × 7,847.15
  4. Step 4: Simplify right side
    18,937.40x = 222,869,648.97
  5. Step 5: Solve for x
    x = 222,869,648.97/18,937.40
  6. Step 6: Final answer
    x = 11,768.76

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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.