Home / 13,624.78-20,438.34-3,764.06

Finding the Fourth Proportional to 13,624.78, 20,438.34 and 3,764.06

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Solution

The fourth proportional to 13,624.78, 20,438.34 and 3,764.06 is: 5,646.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.78 : 20,438.34 = 3,764.06 : x
  2. Step 2: Convert to fraction form
    13,624.78/20,438.34 = 3,764.06/x
  3. Step 3: Cross multiply
    13,624.78x = 20,438.34 × 3,764.06
  4. Step 4: Simplify right side
    13,624.78x = 76,931,138.06
  5. Step 5: Solve for x
    x = 76,931,138.06/13,624.78
  6. Step 6: Final answer
    x = 5,646.41

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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.