Home / 31,211.38-46,790.34-11,479.78

Finding the Fourth Proportional to 31,211.38, 46,790.34 and 11,479.78

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Solution

The fourth proportional to 31,211.38, 46,790.34 and 11,479.78 is: 17,209.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,211.38 : 46,790.34 = 11,479.78 : x
  2. Step 2: Convert to fraction form
    31,211.38/46,790.34 = 11,479.78/x
  3. Step 3: Cross multiply
    31,211.38x = 46,790.34 × 11,479.78
  4. Step 4: Simplify right side
    31,211.38x = 537,142,809.33
  5. Step 5: Solve for x
    x = 537,142,809.33/31,211.38
  6. Step 6: Final answer
    x = 17,209.84

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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.