Home / 20,860.91-31,293.29-6,821.01

Finding the Fourth Proportional to 20,860.91, 31,293.29 and 6,821.01

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Solution

The fourth proportional to 20,860.91, 31,293.29 and 6,821.01 is: 10,232.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.91 : 31,293.29 = 6,821.01 : x
  2. Step 2: Convert to fraction form
    20,860.91/31,293.29 = 6,821.01/x
  3. Step 3: Cross multiply
    20,860.91x = 31,293.29 × 6,821.01
  4. Step 4: Simplify right side
    20,860.91x = 213,451,809.92
  5. Step 5: Solve for x
    x = 213,451,809.92/20,860.91
  6. Step 6: Final answer
    x = 10,232.14

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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.