Home / 12,972.60-19,451.70-5,172.60

Finding the Fourth Proportional to 12,972.60, 19,451.70 and 5,172.60

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Solution

The fourth proportional to 12,972.60, 19,451.70 and 5,172.60 is: 7,756.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.60 : 19,451.70 = 5,172.60 : x
  2. Step 2: Convert to fraction form
    12,972.60/19,451.70 = 5,172.60/x
  3. Step 3: Cross multiply
    12,972.60x = 19,451.70 × 5,172.60
  4. Step 4: Simplify right side
    12,972.60x = 100,615,863.42
  5. Step 5: Solve for x
    x = 100,615,863.42/12,972.60
  6. Step 6: Final answer
    x = 7,756.03

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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.