Home / 25,821.60-38,732.40-8,293.20

Finding the Fourth Proportional to 25,821.60, 38,732.40 and 8,293.20

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Solution

The fourth proportional to 25,821.60, 38,732.40 and 8,293.20 is: 12,439.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,821.60 : 38,732.40 = 8,293.20 : x
  2. Step 2: Convert to fraction form
    25,821.60/38,732.40 = 8,293.20/x
  3. Step 3: Cross multiply
    25,821.60x = 38,732.40 × 8,293.20
  4. Step 4: Simplify right side
    25,821.60x = 321,215,539.68
  5. Step 5: Solve for x
    x = 321,215,539.68/25,821.60
  6. Step 6: Final answer
    x = 12,439.80

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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.