Home / 12,823.50-19,238.66-5,428.27

Finding the Fourth Proportional to 12,823.50, 19,238.66 and 5,428.27

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Solution

The fourth proportional to 12,823.50, 19,238.66 and 5,428.27 is: 8,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,823.50 : 19,238.66 = 5,428.27 : x
  2. Step 2: Convert to fraction form
    12,823.50/19,238.66 = 5,428.27/x
  3. Step 3: Cross multiply
    12,823.50x = 19,238.66 × 5,428.27
  4. Step 4: Simplify right side
    12,823.50x = 104,432,640.92
  5. Step 5: Solve for x
    x = 104,432,640.92/12,823.50
  6. Step 6: Final answer
    x = 8,143.85

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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.