Home / 13,458.44-20,190.36-4,691

Finding the Fourth Proportional to 13,458.44, 20,190.36 and 4,691

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Solution

The fourth proportional to 13,458.44, 20,190.36 and 4,691 is: 7,037.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.44 : 20,190.36 = 4,691 : x
  2. Step 2: Convert to fraction form
    13,458.44/20,190.36 = 4,691/x
  3. Step 3: Cross multiply
    13,458.44x = 20,190.36 × 4,691
  4. Step 4: Simplify right side
    13,458.44x = 94,712,978.76
  5. Step 5: Solve for x
    x = 94,712,978.76/13,458.44
  6. Step 6: Final answer
    x = 7,037.44

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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.