Home / 13,491.61-20,237.60-5,172.05

Finding the Fourth Proportional to 13,491.61, 20,237.60 and 5,172.05

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Solution

The fourth proportional to 13,491.61, 20,237.60 and 5,172.05 is: 7,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.61 : 20,237.60 = 5,172.05 : x
  2. Step 2: Convert to fraction form
    13,491.61/20,237.60 = 5,172.05/x
  3. Step 3: Cross multiply
    13,491.61x = 20,237.60 × 5,172.05
  4. Step 4: Simplify right side
    13,491.61x = 104,669,879.08
  5. Step 5: Solve for x
    x = 104,669,879.08/13,491.61
  6. Step 6: Final answer
    x = 7,758.15

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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.