Home / 31,915.09-47,894.51-11,138.59

Finding the Fourth Proportional to 31,915.09, 47,894.51 and 11,138.59

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Solution

The fourth proportional to 31,915.09, 47,894.51 and 11,138.59 is: 16,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,915.09 : 47,894.51 = 11,138.59 : x
  2. Step 2: Convert to fraction form
    31,915.09/47,894.51 = 11,138.59/x
  3. Step 3: Cross multiply
    31,915.09x = 47,894.51 × 11,138.59
  4. Step 4: Simplify right side
    31,915.09x = 533,477,310.14
  5. Step 5: Solve for x
    x = 533,477,310.14/31,915.09
  6. Step 6: Final answer
    x = 16,715.52

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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.