Home / 31,556.36-47,298.20-12,815.82

Finding the Fourth Proportional to 31,556.36, 47,298.20 and 12,815.82

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Solution

The fourth proportional to 31,556.36, 47,298.20 and 12,815.82 is: 19,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,556.36 : 47,298.20 = 12,815.82 : x
  2. Step 2: Convert to fraction form
    31,556.36/47,298.20 = 12,815.82/x
  3. Step 3: Cross multiply
    31,556.36x = 47,298.20 × 12,815.82
  4. Step 4: Simplify right side
    31,556.36x = 606,165,153.44
  5. Step 5: Solve for x
    x = 606,165,153.44/31,556.36
  6. Step 6: Final answer
    x = 19,208.97

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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.