Home / 31,391.05-47,086.56-11,674.57

Finding the Fourth Proportional to 31,391.05, 47,086.56 and 11,674.57

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Solution

The fourth proportional to 31,391.05, 47,086.56 and 11,674.57 is: 17,511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.05 : 47,086.56 = 11,674.57 : x
  2. Step 2: Convert to fraction form
    31,391.05/47,086.56 = 11,674.57/x
  3. Step 3: Cross multiply
    31,391.05x = 47,086.56 × 11,674.57
  4. Step 4: Simplify right side
    31,391.05x = 549,715,340.78
  5. Step 5: Solve for x
    x = 549,715,340.78/31,391.05
  6. Step 6: Final answer
    x = 17,511.85

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1.5x scale

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.