Home / 31,915.69-47,895.41-11,139.19

Finding the Fourth Proportional to 31,915.69, 47,895.41 and 11,139.19

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Solution

The fourth proportional to 31,915.69, 47,895.41 and 11,139.19 is: 16,716.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,915.69 : 47,895.41 = 11,139.19 : x
  2. Step 2: Convert to fraction form
    31,915.69/47,895.41 = 11,139.19/x
  3. Step 3: Cross multiply
    31,915.69x = 47,895.41 × 11,139.19
  4. Step 4: Simplify right side
    31,915.69x = 533,515,896.68
  5. Step 5: Solve for x
    x = 533,515,896.68/31,915.69
  6. Step 6: Final answer
    x = 16,716.42

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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.