Home / 25,785.60-38,620.80-20,601.60

Finding the Fourth Proportional to 25,785.60, 38,620.80 and 20,601.60

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Solution

The fourth proportional to 25,785.60, 38,620.80 and 20,601.60 is: 30,856.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,785.60 : 38,620.80 = 20,601.60 : x
  2. Step 2: Convert to fraction form
    25,785.60/38,620.80 = 20,601.60/x
  3. Step 3: Cross multiply
    25,785.60x = 38,620.80 × 20,601.60
  4. Step 4: Simplify right side
    25,785.60x = 795,650,273.28
  5. Step 5: Solve for x
    x = 795,650,273.28/25,785.60
  6. Step 6: Final answer
    x = 30,856.38

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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.