Home / 10,389.97-15,581.88-3,816.67

Finding the Fourth Proportional to 10,389.97, 15,581.88 and 3,816.67

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Solution

The fourth proportional to 10,389.97, 15,581.88 and 3,816.67 is: 5,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.97 : 15,581.88 = 3,816.67 : x
  2. Step 2: Convert to fraction form
    10,389.97/15,581.88 = 3,816.67/x
  3. Step 3: Cross multiply
    10,389.97x = 15,581.88 × 3,816.67
  4. Step 4: Simplify right side
    10,389.97x = 59,470,889.57
  5. Step 5: Solve for x
    x = 59,470,889.57/10,389.97
  6. Step 6: Final answer
    x = 5,723.87

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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.