Home / 13,990.54-19,306.20-8,021.92

Finding the Fourth Proportional to 13,990.54, 19,306.20 and 8,021.92

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Solution

The fourth proportional to 13,990.54, 19,306.20 and 8,021.92 is: 11,069.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.54 : 19,306.20 = 8,021.92 : x
  2. Step 2: Convert to fraction form
    13,990.54/19,306.20 = 8,021.92/x
  3. Step 3: Cross multiply
    13,990.54x = 19,306.20 × 8,021.92
  4. Step 4: Simplify right side
    13,990.54x = 154,872,791.90
  5. Step 5: Solve for x
    x = 154,872,791.90/13,990.54
  6. Step 6: Final answer
    x = 11,069.82

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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.