Home / 20,328.06-30,449.16-16,809.42

Finding the Fourth Proportional to 20,328.06, 30,449.16 and 16,809.42

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Solution

The fourth proportional to 20,328.06, 30,449.16 and 16,809.42 is: 25,178.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.06 : 30,449.16 = 16,809.42 : x
  2. Step 2: Convert to fraction form
    20,328.06/30,449.16 = 16,809.42/x
  3. Step 3: Cross multiply
    20,328.06x = 30,449.16 × 16,809.42
  4. Step 4: Simplify right side
    20,328.06x = 511,832,719.09
  5. Step 5: Solve for x
    x = 511,832,719.09/20,328.06
  6. Step 6: Final answer
    x = 25,178.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.