Home / 25,650.60-38,475.48-8,120.40

Finding the Fourth Proportional to 25,650.60, 38,475.48 and 8,120.40

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Solution

The fourth proportional to 25,650.60, 38,475.48 and 8,120.40 is: 12,180.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,650.60 : 38,475.48 = 8,120.40 : x
  2. Step 2: Convert to fraction form
    25,650.60/38,475.48 = 8,120.40/x
  3. Step 3: Cross multiply
    25,650.60x = 38,475.48 × 8,120.40
  4. Step 4: Simplify right side
    25,650.60x = 312,436,287.79
  5. Step 5: Solve for x
    x = 312,436,287.79/25,650.60
  6. Step 6: Final answer
    x = 12,180.47

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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.