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Finding the Fourth Proportional to 25,608.78, 38,400.93 and 13,134.78

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Solution

The fourth proportional to 25,608.78, 38,400.93 and 13,134.78 is: 19,695.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,608.78 : 38,400.93 = 13,134.78 : x
  2. Step 2: Convert to fraction form
    25,608.78/38,400.93 = 13,134.78/x
  3. Step 3: Cross multiply
    25,608.78x = 38,400.93 × 13,134.78
  4. Step 4: Simplify right side
    25,608.78x = 504,387,767.35
  5. Step 5: Solve for x
    x = 504,387,767.35/25,608.78
  6. Step 6: Final answer
    x = 19,695.89

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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.