Home / 13,491.62-20,237.60-5,172.06

Finding the Fourth Proportional to 13,491.62, 20,237.60 and 5,172.06

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Solution

The fourth proportional to 13,491.62, 20,237.60 and 5,172.06 is: 7,758.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.62 : 20,237.60 = 5,172.06 : x
  2. Step 2: Convert to fraction form
    13,491.62/20,237.60 = 5,172.06/x
  3. Step 3: Cross multiply
    13,491.62x = 20,237.60 × 5,172.06
  4. Step 4: Simplify right side
    13,491.62x = 104,670,081.46
  5. Step 5: Solve for x
    x = 104,670,081.46/13,491.62
  6. Step 6: Final answer
    x = 7,758.16

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1.5x scale

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.