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Finding the Fourth Proportional to 25,297.20, 37,945.80 and 8,881.20

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Solution

The fourth proportional to 25,297.20, 37,945.80 and 8,881.20 is: 13,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,297.20 : 37,945.80 = 8,881.20 : x
  2. Step 2: Convert to fraction form
    25,297.20/37,945.80 = 8,881.20/x
  3. Step 3: Cross multiply
    25,297.20x = 37,945.80 × 8,881.20
  4. Step 4: Simplify right side
    25,297.20x = 337,004,238.96
  5. Step 5: Solve for x
    x = 337,004,238.96/25,297.20
  6. Step 6: Final answer
    x = 13,321.80

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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.