Home / 19,119.21-28,680.08-5,079.04

Finding the Fourth Proportional to 19,119.21, 28,680.08 and 5,079.04

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Solution

The fourth proportional to 19,119.21, 28,680.08 and 5,079.04 is: 7,618.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.21 : 28,680.08 = 5,079.04 : x
  2. Step 2: Convert to fraction form
    19,119.21/28,680.08 = 5,079.04/x
  3. Step 3: Cross multiply
    19,119.21x = 28,680.08 × 5,079.04
  4. Step 4: Simplify right side
    19,119.21x = 145,667,176.43
  5. Step 5: Solve for x
    x = 145,667,176.43/19,119.21
  6. Step 6: Final answer
    x = 7,618.89

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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.