Home / 28,009.80-38,652.12-18,595.44

Finding the Fourth Proportional to 28,009.80, 38,652.12 and 18,595.44

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Solution

The fourth proportional to 28,009.80, 38,652.12 and 18,595.44 is: 25,660.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.80 : 38,652.12 = 18,595.44 : x
  2. Step 2: Convert to fraction form
    28,009.80/38,652.12 = 18,595.44/x
  3. Step 3: Cross multiply
    28,009.80x = 38,652.12 × 18,595.44
  4. Step 4: Simplify right side
    28,009.80x = 718,753,178.33
  5. Step 5: Solve for x
    x = 718,753,178.33/28,009.80
  6. Step 6: Final answer
    x = 25,660.78

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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.