Home / 21,277.72-31,920.04-6,286.36

Finding the Fourth Proportional to 21,277.72, 31,920.04 and 6,286.36

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Solution

The fourth proportional to 21,277.72, 31,920.04 and 6,286.36 is: 9,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.72 : 31,920.04 = 6,286.36 : x
  2. Step 2: Convert to fraction form
    21,277.72/31,920.04 = 6,286.36/x
  3. Step 3: Cross multiply
    21,277.72x = 31,920.04 × 6,286.36
  4. Step 4: Simplify right side
    21,277.72x = 200,660,862.65
  5. Step 5: Solve for x
    x = 200,660,862.65/21,277.72
  6. Step 6: Final answer
    x = 9,430.56

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1.5x scale

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.