Home / 10,389.42-15,586.26-3,815.67

Finding the Fourth Proportional to 10,389.42, 15,586.26 and 3,815.67

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Solution

The fourth proportional to 10,389.42, 15,586.26 and 3,815.67 is: 5,724.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.42 : 15,586.26 = 3,815.67 : x
  2. Step 2: Convert to fraction form
    10,389.42/15,586.26 = 3,815.67/x
  3. Step 3: Cross multiply
    10,389.42x = 15,586.26 × 3,815.67
  4. Step 4: Simplify right side
    10,389.42x = 59,472,024.69
  5. Step 5: Solve for x
    x = 59,472,024.69/10,389.42
  6. Step 6: Final answer
    x = 5,724.29

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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.