Home / 20,179.68-27,818.80-13,362.29

Finding the Fourth Proportional to 20,179.68, 27,818.80 and 13,362.29

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Solution

The fourth proportional to 20,179.68, 27,818.80 and 13,362.29 is: 18,420.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.68 : 27,818.80 = 13,362.29 : x
  2. Step 2: Convert to fraction form
    20,179.68/27,818.80 = 13,362.29/x
  3. Step 3: Cross multiply
    20,179.68x = 27,818.80 × 13,362.29
  4. Step 4: Simplify right side
    20,179.68x = 371,722,873.05
  5. Step 5: Solve for x
    x = 371,722,873.05/20,179.68
  6. Step 6: Final answer
    x = 18,420.65

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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.