Home / 21,176.26-31,736.68-8,681.65

Finding the Fourth Proportional to 21,176.26, 31,736.68 and 8,681.65

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Solution

The fourth proportional to 21,176.26, 31,736.68 and 8,681.65 is: 13,011.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.26 : 31,736.68 = 8,681.65 : x
  2. Step 2: Convert to fraction form
    21,176.26/31,736.68 = 8,681.65/x
  3. Step 3: Cross multiply
    21,176.26x = 31,736.68 × 8,681.65
  4. Step 4: Simplify right side
    21,176.26x = 275,526,747.92
  5. Step 5: Solve for x
    x = 275,526,747.92/21,176.26
  6. Step 6: Final answer
    x = 13,011.11

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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.