Home / 20,559.96-28,367.64-12,062.88

Finding the Fourth Proportional to 20,559.96, 28,367.64 and 12,062.88

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Solution

The fourth proportional to 20,559.96, 28,367.64 and 12,062.88 is: 16,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.96 : 28,367.64 = 12,062.88 : x
  2. Step 2: Convert to fraction form
    20,559.96/28,367.64 = 12,062.88/x
  3. Step 3: Cross multiply
    20,559.96x = 28,367.64 × 12,062.88
  4. Step 4: Simplify right side
    20,559.96x = 342,195,437.20
  5. Step 5: Solve for x
    x = 342,195,437.20/20,559.96
  6. Step 6: Final answer
    x = 16,643.78

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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.