Home / 31,857.10-47,791.70-10,511.11

Finding the Fourth Proportional to 31,857.10, 47,791.70 and 10,511.11

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Solution

The fourth proportional to 31,857.10, 47,791.70 and 10,511.11 is: 15,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,857.10 : 47,791.70 = 10,511.11 : x
  2. Step 2: Convert to fraction form
    31,857.10/47,791.70 = 10,511.11/x
  3. Step 3: Cross multiply
    31,857.10x = 47,791.70 × 10,511.11
  4. Step 4: Simplify right side
    31,857.10x = 502,343,815.79
  5. Step 5: Solve for x
    x = 502,343,815.79/31,857.10
  6. Step 6: Final answer
    x = 15,768.66

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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.