Home / 25,811.20-35,619.78-15,200.20

Finding the Fourth Proportional to 25,811.20, 35,619.78 and 15,200.20

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Solution

The fourth proportional to 25,811.20, 35,619.78 and 15,200.20 is: 20,976.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,811.20 : 35,619.78 = 15,200.20 : x
  2. Step 2: Convert to fraction form
    25,811.20/35,619.78 = 15,200.20/x
  3. Step 3: Cross multiply
    25,811.20x = 35,619.78 × 15,200.20
  4. Step 4: Simplify right side
    25,811.20x = 541,427,779.96
  5. Step 5: Solve for x
    x = 541,427,779.96/25,811.20
  6. Step 6: Final answer
    x = 20,976.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.