Home / 25,344.20-38,021.70-7,815.80

Finding the Fourth Proportional to 25,344.20, 38,021.70 and 7,815.80

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Solution

The fourth proportional to 25,344.20, 38,021.70 and 7,815.80 is: 11,725.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,344.20 : 38,021.70 = 7,815.80 : x
  2. Step 2: Convert to fraction form
    25,344.20/38,021.70 = 7,815.80/x
  3. Step 3: Cross multiply
    25,344.20x = 38,021.70 × 7,815.80
  4. Step 4: Simplify right side
    25,344.20x = 297,170,002.86
  5. Step 5: Solve for x
    x = 297,170,002.86/25,344.20
  6. Step 6: Final answer
    x = 11,725.37

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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.