Home / 20,933.33-31,373.24-9,815.49

Finding the Fourth Proportional to 20,933.33, 31,373.24 and 9,815.49

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Solution

The fourth proportional to 20,933.33, 31,373.24 and 9,815.49 is: 14,710.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.33 : 31,373.24 = 9,815.49 : x
  2. Step 2: Convert to fraction form
    20,933.33/31,373.24 = 9,815.49/x
  3. Step 3: Cross multiply
    20,933.33x = 31,373.24 × 9,815.49
  4. Step 4: Simplify right side
    20,933.33x = 307,943,674.41
  5. Step 5: Solve for x
    x = 307,943,674.41/20,933.33
  6. Step 6: Final answer
    x = 14,710.69

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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.