Home / 15,131.14-20,882.81-9,162.65

Finding the Fourth Proportional to 15,131.14, 20,882.81 and 9,162.65

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Solution

The fourth proportional to 15,131.14, 20,882.81 and 9,162.65 is: 12,645.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.14 : 20,882.81 = 9,162.65 : x
  2. Step 2: Convert to fraction form
    15,131.14/20,882.81 = 9,162.65/x
  3. Step 3: Cross multiply
    15,131.14x = 20,882.81 × 9,162.65
  4. Step 4: Simplify right side
    15,131.14x = 191,341,954.16
  5. Step 5: Solve for x
    x = 191,341,954.16/15,131.14
  6. Step 6: Final answer
    x = 12,645.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.