Home / 25,378.20-38,072.70-7,849.80

Finding the Fourth Proportional to 25,378.20, 38,072.70 and 7,849.80

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Solution

The fourth proportional to 25,378.20, 38,072.70 and 7,849.80 is: 11,776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,378.20 : 38,072.70 = 7,849.80 : x
  2. Step 2: Convert to fraction form
    25,378.20/38,072.70 = 7,849.80/x
  3. Step 3: Cross multiply
    25,378.20x = 38,072.70 × 7,849.80
  4. Step 4: Simplify right side
    25,378.20x = 298,863,080.46
  5. Step 5: Solve for x
    x = 298,863,080.46/25,378.20
  6. Step 6: Final answer
    x = 11,776.37

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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.