Home / 25,770.24-35,634.51-20,455.83

Finding the Fourth Proportional to 25,770.24, 35,634.51 and 20,455.83

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Solution

The fourth proportional to 25,770.24, 35,634.51 and 20,455.83 is: 28,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,770.24 : 35,634.51 = 20,455.83 : x
  2. Step 2: Convert to fraction form
    25,770.24/35,634.51 = 20,455.83/x
  3. Step 3: Cross multiply
    25,770.24x = 35,634.51 × 20,455.83
  4. Step 4: Simplify right side
    25,770.24x = 728,933,478.69
  5. Step 5: Solve for x
    x = 728,933,478.69/25,770.24
  6. Step 6: Final answer
    x = 28,285.86

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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.