Home / 13,487.61-20,231.60-5,168.05

Finding the Fourth Proportional to 13,487.61, 20,231.60 and 5,168.05

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Solution

The fourth proportional to 13,487.61, 20,231.60 and 5,168.05 is: 7,752.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.61 : 20,231.60 = 5,168.05 : x
  2. Step 2: Convert to fraction form
    13,487.61/20,231.60 = 5,168.05/x
  3. Step 3: Cross multiply
    13,487.61x = 20,231.60 × 5,168.05
  4. Step 4: Simplify right side
    13,487.61x = 104,557,819.22
  5. Step 5: Solve for x
    x = 104,557,819.22/13,487.61
  6. Step 6: Final answer
    x = 7,752.14

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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.