Home / 25,992.20-38,930.70-10,401.80

Finding the Fourth Proportional to 25,992.20, 38,930.70 and 10,401.80

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Solution

The fourth proportional to 25,992.20, 38,930.70 and 10,401.80 is: 15,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,992.20 : 38,930.70 = 10,401.80 : x
  2. Step 2: Convert to fraction form
    25,992.20/38,930.70 = 10,401.80/x
  3. Step 3: Cross multiply
    25,992.20x = 38,930.70 × 10,401.80
  4. Step 4: Simplify right side
    25,992.20x = 404,949,355.26
  5. Step 5: Solve for x
    x = 404,949,355.26/25,992.20
  6. Step 6: Final answer
    x = 15,579.65

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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.