Home / 13,990.18-19,304.19-8,020.75

Finding the Fourth Proportional to 13,990.18, 19,304.19 and 8,020.75

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Solution

The fourth proportional to 13,990.18, 19,304.19 and 8,020.75 is: 11,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.18 : 19,304.19 = 8,020.75 : x
  2. Step 2: Convert to fraction form
    13,990.18/19,304.19 = 8,020.75/x
  3. Step 3: Cross multiply
    13,990.18x = 19,304.19 × 8,020.75
  4. Step 4: Simplify right side
    13,990.18x = 154,834,081.94
  5. Step 5: Solve for x
    x = 154,834,081.94/13,990.18
  6. Step 6: Final answer
    x = 11,067.34

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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.