Home / 25,335.20-37,959.60-20,928.80

Finding the Fourth Proportional to 25,335.20, 37,959.60 and 20,928.80

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Solution

The fourth proportional to 25,335.20, 37,959.60 and 20,928.80 is: 31,357.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,335.20 : 37,959.60 = 20,928.80 : x
  2. Step 2: Convert to fraction form
    25,335.20/37,959.60 = 20,928.80/x
  3. Step 3: Cross multiply
    25,335.20x = 37,959.60 × 20,928.80
  4. Step 4: Simplify right side
    25,335.20x = 794,448,876.48
  5. Step 5: Solve for x
    x = 794,448,876.48/25,335.20
  6. Step 6: Final answer
    x = 31,357.51

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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.