Home / 22,745.71-31,389.15-13,187.48

Finding the Fourth Proportional to 22,745.71, 31,389.15 and 13,187.48

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Solution

The fourth proportional to 22,745.71, 31,389.15 and 13,187.48 is: 18,198.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,745.71 : 31,389.15 = 13,187.48 : x
  2. Step 2: Convert to fraction form
    22,745.71/31,389.15 = 13,187.48/x
  3. Step 3: Cross multiply
    22,745.71x = 31,389.15 × 13,187.48
  4. Step 4: Simplify right side
    22,745.71x = 413,943,680.35
  5. Step 5: Solve for x
    x = 413,943,680.35/22,745.71
  6. Step 6: Final answer
    x = 18,198.76

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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.