Home / 31,915.94-47,895.78-11,139.44

Finding the Fourth Proportional to 31,915.94, 47,895.78 and 11,139.44

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Solution

The fourth proportional to 31,915.94, 47,895.78 and 11,139.44 is: 16,716.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,915.94 : 47,895.78 = 11,139.44 : x
  2. Step 2: Convert to fraction form
    31,915.94/47,895.78 = 11,139.44/x
  3. Step 3: Cross multiply
    31,915.94x = 47,895.78 × 11,139.44
  4. Step 4: Simplify right side
    31,915.94x = 533,532,047.82
  5. Step 5: Solve for x
    x = 533,532,047.82/31,915.94
  6. Step 6: Final answer
    x = 16,716.79

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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.