Home / 15,217.02-22,815.20-5,355

Finding the Fourth Proportional to 15,217.02, 22,815.20 and 5,355

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Solution

The fourth proportional to 15,217.02, 22,815.20 and 5,355 is: 8,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217.02 : 22,815.20 = 5,355 : x
  2. Step 2: Convert to fraction form
    15,217.02/22,815.20 = 5,355/x
  3. Step 3: Cross multiply
    15,217.02x = 22,815.20 × 5,355
  4. Step 4: Simplify right side
    15,217.02x = 122,175,409.39
  5. Step 5: Solve for x
    x = 122,175,409.39/15,217.02
  6. Step 6: Final answer
    x = 8,028.87

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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.