Home / 11,315.14-16,970.51-5,691.31

Finding the Fourth Proportional to 11,315.14, 16,970.51 and 5,691.31

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Solution

The fourth proportional to 11,315.14, 16,970.51 and 5,691.31 is: 8,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.14 : 16,970.51 = 5,691.31 : x
  2. Step 2: Convert to fraction form
    11,315.14/16,970.51 = 5,691.31/x
  3. Step 3: Cross multiply
    11,315.14x = 16,970.51 × 5,691.31
  4. Step 4: Simplify right side
    11,315.14x = 96,584,447.50
  5. Step 5: Solve for x
    x = 96,584,447.50/11,315.14
  6. Step 6: Final answer
    x = 8,535.86

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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.