Home / 15,304.82-21,121.16-8,591.67

Finding the Fourth Proportional to 15,304.82, 21,121.16 and 8,591.67

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Solution

The fourth proportional to 15,304.82, 21,121.16 and 8,591.67 is: 11,856.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.82 : 21,121.16 = 8,591.67 : x
  2. Step 2: Convert to fraction form
    15,304.82/21,121.16 = 8,591.67/x
  3. Step 3: Cross multiply
    15,304.82x = 21,121.16 × 8,591.67
  4. Step 4: Simplify right side
    15,304.82x = 181,465,993.78
  5. Step 5: Solve for x
    x = 181,465,993.78/15,304.82
  6. Step 6: Final answer
    x = 11,856.79

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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.