Home / 13,671.87-20,499.70-6,172.35

Finding the Fourth Proportional to 13,671.87, 20,499.70 and 6,172.35

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Solution

The fourth proportional to 13,671.87, 20,499.70 and 6,172.35 is: 9,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.87 : 20,499.70 = 6,172.35 : x
  2. Step 2: Convert to fraction form
    13,671.87/20,499.70 = 6,172.35/x
  3. Step 3: Cross multiply
    13,671.87x = 20,499.70 × 6,172.35
  4. Step 4: Simplify right side
    13,671.87x = 126,531,323.30
  5. Step 5: Solve for x
    x = 126,531,323.30/13,671.87
  6. Step 6: Final answer
    x = 9,254.87

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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.