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Finding the Fourth Proportional to 25,661.46, 38,488.02 and 9,859.20

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Solution

The fourth proportional to 25,661.46, 38,488.02 and 9,859.20 is: 14,787.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,661.46 : 38,488.02 = 9,859.20 : x
  2. Step 2: Convert to fraction form
    25,661.46/38,488.02 = 9,859.20/x
  3. Step 3: Cross multiply
    25,661.46x = 38,488.02 × 9,859.20
  4. Step 4: Simplify right side
    25,661.46x = 379,461,086.78
  5. Step 5: Solve for x
    x = 379,461,086.78/25,661.46
  6. Step 6: Final answer
    x = 14,787.20

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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.