Home / 12,528.45-18,799.62-5,138.07

Finding the Fourth Proportional to 12,528.45, 18,799.62 and 5,138.07

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Solution

The fourth proportional to 12,528.45, 18,799.62 and 5,138.07 is: 7,709.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.45 : 18,799.62 = 5,138.07 : x
  2. Step 2: Convert to fraction form
    12,528.45/18,799.62 = 5,138.07/x
  3. Step 3: Cross multiply
    12,528.45x = 18,799.62 × 5,138.07
  4. Step 4: Simplify right side
    12,528.45x = 96,593,763.53
  5. Step 5: Solve for x
    x = 96,593,763.53/12,528.45
  6. Step 6: Final answer
    x = 7,709.95

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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.