Home / 25,409.28-38,121.60-12,259.20

Finding the Fourth Proportional to 25,409.28, 38,121.60 and 12,259.20

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Solution

The fourth proportional to 25,409.28, 38,121.60 and 12,259.20 is: 18,392.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,409.28 : 38,121.60 = 12,259.20 : x
  2. Step 2: Convert to fraction form
    25,409.28/38,121.60 = 12,259.20/x
  3. Step 3: Cross multiply
    25,409.28x = 38,121.60 × 12,259.20
  4. Step 4: Simplify right side
    25,409.28x = 467,340,318.72
  5. Step 5: Solve for x
    x = 467,340,318.72/25,409.28
  6. Step 6: Final answer
    x = 18,392.51

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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.