Home / 32,634.12-45,049.31-20,715.78

Finding the Fourth Proportional to 32,634.12, 45,049.31 and 20,715.78

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Solution

The fourth proportional to 32,634.12, 45,049.31 and 20,715.78 is: 28,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,634.12 : 45,049.31 = 20,715.78 : x
  2. Step 2: Convert to fraction form
    32,634.12/45,049.31 = 20,715.78/x
  3. Step 3: Cross multiply
    32,634.12x = 45,049.31 × 20,715.78
  4. Step 4: Simplify right side
    32,634.12x = 933,231,854.68
  5. Step 5: Solve for x
    x = 933,231,854.68/32,634.12
  6. Step 6: Final answer
    x = 28,596.81

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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.