Home / 21,149.52-31,727.21-7,110.65

Finding the Fourth Proportional to 21,149.52, 31,727.21 and 7,110.65

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Solution

The fourth proportional to 21,149.52, 31,727.21 and 7,110.65 is: 10,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.52 : 31,727.21 = 7,110.65 : x
  2. Step 2: Convert to fraction form
    21,149.52/31,727.21 = 7,110.65/x
  3. Step 3: Cross multiply
    21,149.52x = 31,727.21 × 7,110.65
  4. Step 4: Simplify right side
    21,149.52x = 225,600,891.60
  5. Step 5: Solve for x
    x = 225,600,891.60/21,149.52
  6. Step 6: Final answer
    x = 10,666.95

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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.