Home / 31,906.10-47,859.15-12,186.65

Finding the Fourth Proportional to 31,906.10, 47,859.15 and 12,186.65

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Solution

The fourth proportional to 31,906.10, 47,859.15 and 12,186.65 is: 18,279.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,906.10 : 47,859.15 = 12,186.65 : x
  2. Step 2: Convert to fraction form
    31,906.10/47,859.15 = 12,186.65/x
  3. Step 3: Cross multiply
    31,906.10x = 47,859.15 × 12,186.65
  4. Step 4: Simplify right side
    31,906.10x = 583,242,875.70
  5. Step 5: Solve for x
    x = 583,242,875.70/31,906.10
  6. Step 6: Final answer
    x = 18,279.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.