Home / 19,880.05-29,819.38-5,089.09

Finding the Fourth Proportional to 19,880.05, 29,819.38 and 5,089.09

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Solution

The fourth proportional to 19,880.05, 29,819.38 and 5,089.09 is: 7,633.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.05 : 29,819.38 = 5,089.09 : x
  2. Step 2: Convert to fraction form
    19,880.05/29,819.38 = 5,089.09/x
  3. Step 3: Cross multiply
    19,880.05x = 29,819.38 × 5,089.09
  4. Step 4: Simplify right side
    19,880.05x = 151,753,508.56
  5. Step 5: Solve for x
    x = 151,753,508.56/19,880.05
  6. Step 6: Final answer
    x = 7,633.46

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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.