Home / 19,920.16-27,489.92-10,968.56

Finding the Fourth Proportional to 19,920.16, 27,489.92 and 10,968.56

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Solution

The fourth proportional to 19,920.16, 27,489.92 and 10,968.56 is: 15,136.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.16 : 27,489.92 = 10,968.56 : x
  2. Step 2: Convert to fraction form
    19,920.16/27,489.92 = 10,968.56/x
  3. Step 3: Cross multiply
    19,920.16x = 27,489.92 × 10,968.56
  4. Step 4: Simplify right side
    19,920.16x = 301,524,836.92
  5. Step 5: Solve for x
    x = 301,524,836.92/19,920.16
  6. Step 6: Final answer
    x = 15,136.67

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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.