Home / 18,996.30-28,494.42-5,145.30

Finding the Fourth Proportional to 18,996.30, 28,494.42 and 5,145.30

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Solution

The fourth proportional to 18,996.30, 28,494.42 and 5,145.30 is: 7,717.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.30 : 28,494.42 = 5,145.30 : x
  2. Step 2: Convert to fraction form
    18,996.30/28,494.42 = 5,145.30/x
  3. Step 3: Cross multiply
    18,996.30x = 28,494.42 × 5,145.30
  4. Step 4: Simplify right side
    18,996.30x = 146,612,339.23
  5. Step 5: Solve for x
    x = 146,612,339.23/18,996.30
  6. Step 6: Final answer
    x = 7,717.94

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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.