Home / 20,685.66-28,546.34-11,254.29

Finding the Fourth Proportional to 20,685.66, 28,546.34 and 11,254.29

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Solution

The fourth proportional to 20,685.66, 28,546.34 and 11,254.29 is: 15,530.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.66 : 28,546.34 = 11,254.29 : x
  2. Step 2: Convert to fraction form
    20,685.66/28,546.34 = 11,254.29/x
  3. Step 3: Cross multiply
    20,685.66x = 28,546.34 × 11,254.29
  4. Step 4: Simplify right side
    20,685.66x = 321,268,732.53
  5. Step 5: Solve for x
    x = 321,268,732.53/20,685.66
  6. Step 6: Final answer
    x = 15,530.99

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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.