Home / 31,891.86-47,806.56-11,886.71

Finding the Fourth Proportional to 31,891.86, 47,806.56 and 11,886.71

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Solution

The fourth proportional to 31,891.86, 47,806.56 and 11,886.71 is: 17,818.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,891.86 : 47,806.56 = 11,886.71 : x
  2. Step 2: Convert to fraction form
    31,891.86/47,806.56 = 11,886.71/x
  3. Step 3: Cross multiply
    31,891.86x = 47,806.56 × 11,886.71
  4. Step 4: Simplify right side
    31,891.86x = 568,262,714.82
  5. Step 5: Solve for x
    x = 568,262,714.82/31,891.86
  6. Step 6: Final answer
    x = 17,818.42

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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.