Home / 25,942.20-38,913.30-12,820.20

Finding the Fourth Proportional to 25,942.20, 38,913.30 and 12,820.20

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Solution

The fourth proportional to 25,942.20, 38,913.30 and 12,820.20 is: 19,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,942.20 : 38,913.30 = 12,820.20 : x
  2. Step 2: Convert to fraction form
    25,942.20/38,913.30 = 12,820.20/x
  3. Step 3: Cross multiply
    25,942.20x = 38,913.30 × 12,820.20
  4. Step 4: Simplify right side
    25,942.20x = 498,876,288.66
  5. Step 5: Solve for x
    x = 498,876,288.66/25,942.20
  6. Step 6: Final answer
    x = 19,230.30

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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.