Home / 13,412.20-20,105.34-4,640.52

Finding the Fourth Proportional to 13,412.20, 20,105.34 and 4,640.52

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Solution

The fourth proportional to 13,412.20, 20,105.34 and 4,640.52 is: 6,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.20 : 20,105.34 = 4,640.52 : x
  2. Step 2: Convert to fraction form
    13,412.20/20,105.34 = 4,640.52/x
  3. Step 3: Cross multiply
    13,412.20x = 20,105.34 × 4,640.52
  4. Step 4: Simplify right side
    13,412.20x = 93,299,232.38
  5. Step 5: Solve for x
    x = 93,299,232.38/13,412.20
  6. Step 6: Final answer
    x = 6,956.30

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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.