Home / 21,304.86-29,400.03-13,351.38

Finding the Fourth Proportional to 21,304.86, 29,400.03 and 13,351.38

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Solution

The fourth proportional to 21,304.86, 29,400.03 and 13,351.38 is: 18,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.86 : 29,400.03 = 13,351.38 : x
  2. Step 2: Convert to fraction form
    21,304.86/29,400.03 = 13,351.38/x
  3. Step 3: Cross multiply
    21,304.86x = 29,400.03 × 13,351.38
  4. Step 4: Simplify right side
    21,304.86x = 392,530,972.54
  5. Step 5: Solve for x
    x = 392,530,972.54/21,304.86
  6. Step 6: Final answer
    x = 18,424.48

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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.