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Finding the Fourth Proportional to 25,751.78, 38,630.91 and 9,107.90

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Solution

The fourth proportional to 25,751.78, 38,630.91 and 9,107.90 is: 13,663.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,751.78 : 38,630.91 = 9,107.90 : x
  2. Step 2: Convert to fraction form
    25,751.78/38,630.91 = 9,107.90/x
  3. Step 3: Cross multiply
    25,751.78x = 38,630.91 × 9,107.90
  4. Step 4: Simplify right side
    25,751.78x = 351,846,465.19
  5. Step 5: Solve for x
    x = 351,846,465.19/25,751.78
  6. Step 6: Final answer
    x = 13,663.00

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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.