Home / 13,400.40-20,100.60-4,165.20

Finding the Fourth Proportional to 13,400.40, 20,100.60 and 4,165.20

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Solution

The fourth proportional to 13,400.40, 20,100.60 and 4,165.20 is: 6,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.40 : 20,100.60 = 4,165.20 : x
  2. Step 2: Convert to fraction form
    13,400.40/20,100.60 = 4,165.20/x
  3. Step 3: Cross multiply
    13,400.40x = 20,100.60 × 4,165.20
  4. Step 4: Simplify right side
    13,400.40x = 83,723,019.12
  5. Step 5: Solve for x
    x = 83,723,019.12/13,400.40
  6. Step 6: Final answer
    x = 6,247.80

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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.