Home / 13,827.38-18,929.12-13,728.56

Finding the Fourth Proportional to 13,827.38, 18,929.12 and 13,728.56

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Solution

The fourth proportional to 13,827.38, 18,929.12 and 13,728.56 is: 18,793.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,827.38 : 18,929.12 = 13,728.56 : x
  2. Step 2: Convert to fraction form
    13,827.38/18,929.12 = 13,728.56/x
  3. Step 3: Cross multiply
    13,827.38x = 18,929.12 × 13,728.56
  4. Step 4: Simplify right side
    13,827.38x = 259,869,559.67
  5. Step 5: Solve for x
    x = 259,869,559.67/13,827.38
  6. Step 6: Final answer
    x = 18,793.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.