Home / 25,430.12-38,146.86-8,791.76

Finding the Fourth Proportional to 25,430.12, 38,146.86 and 8,791.76

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Solution

The fourth proportional to 25,430.12, 38,146.86 and 8,791.76 is: 13,188.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.12 : 38,146.86 = 8,791.76 : x
  2. Step 2: Convert to fraction form
    25,430.12/38,146.86 = 8,791.76/x
  3. Step 3: Cross multiply
    25,430.12x = 38,146.86 × 8,791.76
  4. Step 4: Simplify right side
    25,430.12x = 335,377,847.14
  5. Step 5: Solve for x
    x = 335,377,847.14/25,430.12
  6. Step 6: Final answer
    x = 13,188.22

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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.