Home / 20,891.47-31,336.88-5,096.52

Finding the Fourth Proportional to 20,891.47, 31,336.88 and 5,096.52

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Solution

The fourth proportional to 20,891.47, 31,336.88 and 5,096.52 is: 7,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891.47 : 31,336.88 = 5,096.52 : x
  2. Step 2: Convert to fraction form
    20,891.47/31,336.88 = 5,096.52/x
  3. Step 3: Cross multiply
    20,891.47x = 31,336.88 × 5,096.52
  4. Step 4: Simplify right side
    20,891.47x = 159,709,010.18
  5. Step 5: Solve for x
    x = 159,709,010.18/20,891.47
  6. Step 6: Final answer
    x = 7,644.70

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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.