Home / 22,658.04-31,257.18-13,221

Finding the Fourth Proportional to 22,658.04, 31,257.18 and 13,221

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Solution

The fourth proportional to 22,658.04, 31,257.18 and 13,221 is: 18,238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,658.04 : 31,257.18 = 13,221 : x
  2. Step 2: Convert to fraction form
    22,658.04/31,257.18 = 13,221/x
  3. Step 3: Cross multiply
    22,658.04x = 31,257.18 × 13,221
  4. Step 4: Simplify right side
    22,658.04x = 413,251,176.78
  5. Step 5: Solve for x
    x = 413,251,176.78/22,658.04
  6. Step 6: Final answer
    x = 18,238.61

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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.