Home / 20,825.06-28,742.08-16,382.72

Finding the Fourth Proportional to 20,825.06, 28,742.08 and 16,382.72

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Solution

The fourth proportional to 20,825.06, 28,742.08 and 16,382.72 is: 22,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.06 : 28,742.08 = 16,382.72 : x
  2. Step 2: Convert to fraction form
    20,825.06/28,742.08 = 16,382.72/x
  3. Step 3: Cross multiply
    20,825.06x = 28,742.08 × 16,382.72
  4. Step 4: Simplify right side
    20,825.06x = 470,873,366.18
  5. Step 5: Solve for x
    x = 470,873,366.18/20,825.06
  6. Step 6: Final answer
    x = 22,610.90

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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.