Home / 20,864.58-31,296.58-5,069.72

Finding the Fourth Proportional to 20,864.58, 31,296.58 and 5,069.72

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Solution

The fourth proportional to 20,864.58, 31,296.58 and 5,069.72 is: 7,604.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.58 : 31,296.58 = 5,069.72 : x
  2. Step 2: Convert to fraction form
    20,864.58/31,296.58 = 5,069.72/x
  3. Step 3: Cross multiply
    20,864.58x = 31,296.58 × 5,069.72
  4. Step 4: Simplify right side
    20,864.58x = 158,664,897.56
  5. Step 5: Solve for x
    x = 158,664,897.56/20,864.58
  6. Step 6: Final answer
    x = 7,604.51

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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.