Home / 21,003.11-28,984.27-11,571.67

Finding the Fourth Proportional to 21,003.11, 28,984.27 and 11,571.67

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Solution

The fourth proportional to 21,003.11, 28,984.27 and 11,571.67 is: 15,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.11 : 28,984.27 = 11,571.67 : x
  2. Step 2: Convert to fraction form
    21,003.11/28,984.27 = 11,571.67/x
  3. Step 3: Cross multiply
    21,003.11x = 28,984.27 × 11,571.67
  4. Step 4: Simplify right side
    21,003.11x = 335,396,306.24
  5. Step 5: Solve for x
    x = 335,396,306.24/21,003.11
  6. Step 6: Final answer
    x = 15,968.89

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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.