Home / 15,819.68-23,724.64-5,428.96

Finding the Fourth Proportional to 15,819.68, 23,724.64 and 5,428.96

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Solution

The fourth proportional to 15,819.68, 23,724.64 and 5,428.96 is: 8,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.68 : 23,724.64 = 5,428.96 : x
  2. Step 2: Convert to fraction form
    15,819.68/23,724.64 = 5,428.96/x
  3. Step 3: Cross multiply
    15,819.68x = 23,724.64 × 5,428.96
  4. Step 4: Simplify right side
    15,819.68x = 128,800,121.57
  5. Step 5: Solve for x
    x = 128,800,121.57/15,819.68
  6. Step 6: Final answer
    x = 8,141.77

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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.