Home / 12,136.64-18,201.68-5,209.52

Finding the Fourth Proportional to 12,136.64, 18,201.68 and 5,209.52

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Solution

The fourth proportional to 12,136.64, 18,201.68 and 5,209.52 is: 7,812.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.64 : 18,201.68 = 5,209.52 : x
  2. Step 2: Convert to fraction form
    12,136.64/18,201.68 = 5,209.52/x
  3. Step 3: Cross multiply
    12,136.64x = 18,201.68 × 5,209.52
  4. Step 4: Simplify right side
    12,136.64x = 94,822,015.99
  5. Step 5: Solve for x
    x = 94,822,015.99/12,136.64
  6. Step 6: Final answer
    x = 7,812.87

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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.