Home / 22,745.15-31,388.38-13,186.91

Finding the Fourth Proportional to 22,745.15, 31,388.38 and 13,186.91

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Solution

The fourth proportional to 22,745.15, 31,388.38 and 13,186.91 is: 18,197.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,745.15 : 31,388.38 = 13,186.91 : x
  2. Step 2: Convert to fraction form
    22,745.15/31,388.38 = 13,186.91/x
  3. Step 3: Cross multiply
    22,745.15x = 31,388.38 × 13,186.91
  4. Step 4: Simplify right side
    22,745.15x = 413,915,787.61
  5. Step 5: Solve for x
    x = 413,915,787.61/22,745.15
  6. Step 6: Final answer
    x = 18,197.98

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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.