Home / 19,272.38-28,908.58-5,421.38

Finding the Fourth Proportional to 19,272.38, 28,908.58 and 5,421.38

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Solution

The fourth proportional to 19,272.38, 28,908.58 and 5,421.38 is: 8,132.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,272.38 : 28,908.58 = 5,421.38 : x
  2. Step 2: Convert to fraction form
    19,272.38/28,908.58 = 5,421.38/x
  3. Step 3: Cross multiply
    19,272.38x = 28,908.58 × 5,421.38
  4. Step 4: Simplify right side
    19,272.38x = 156,724,397.44
  5. Step 5: Solve for x
    x = 156,724,397.44/19,272.38
  6. Step 6: Final answer
    x = 8,132.07

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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.