Home / 13,629.60-20,439.60-4,392.48

Finding the Fourth Proportional to 13,629.60, 20,439.60 and 4,392.48

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Solution

The fourth proportional to 13,629.60, 20,439.60 and 4,392.48 is: 6,587.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.60 : 20,439.60 = 4,392.48 : x
  2. Step 2: Convert to fraction form
    13,629.60/20,439.60 = 4,392.48/x
  3. Step 3: Cross multiply
    13,629.60x = 20,439.60 × 4,392.48
  4. Step 4: Simplify right side
    13,629.60x = 89,780,534.21
  5. Step 5: Solve for x
    x = 89,780,534.21/13,629.60
  6. Step 6: Final answer
    x = 6,587.17

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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.