Home / 21,297.86-29,390.37-13,344.38

Finding the Fourth Proportional to 21,297.86, 29,390.37 and 13,344.38

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Solution

The fourth proportional to 21,297.86, 29,390.37 and 13,344.38 is: 18,414.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.86 : 29,390.37 = 13,344.38 : x
  2. Step 2: Convert to fraction form
    21,297.86/29,390.37 = 13,344.38/x
  3. Step 3: Cross multiply
    21,297.86x = 29,390.37 × 13,344.38
  4. Step 4: Simplify right side
    21,297.86x = 392,196,265.62
  5. Step 5: Solve for x
    x = 392,196,265.62/21,297.86
  6. Step 6: Final answer
    x = 18,414.82

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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.