Home / 31,515.31-47,281.17-11,795.39

Finding the Fourth Proportional to 31,515.31, 47,281.17 and 11,795.39

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Solution

The fourth proportional to 31,515.31, 47,281.17 and 11,795.39 is: 17,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.31 : 47,281.17 = 11,795.39 : x
  2. Step 2: Convert to fraction form
    31,515.31/47,281.17 = 11,795.39/x
  3. Step 3: Cross multiply
    31,515.31x = 47,281.17 × 11,795.39
  4. Step 4: Simplify right side
    31,515.31x = 557,699,780.83
  5. Step 5: Solve for x
    x = 557,699,780.83/31,515.31
  6. Step 6: Final answer
    x = 17,696.15

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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.