Home / 18,919.92-28,370.16-8,526

Finding the Fourth Proportional to 18,919.92, 28,370.16 and 8,526

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Solution

The fourth proportional to 18,919.92, 28,370.16 and 8,526 is: 12,784.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.92 : 28,370.16 = 8,526 : x
  2. Step 2: Convert to fraction form
    18,919.92/28,370.16 = 8,526/x
  3. Step 3: Cross multiply
    18,919.92x = 28,370.16 × 8,526
  4. Step 4: Simplify right side
    18,919.92x = 241,883,984.16
  5. Step 5: Solve for x
    x = 241,883,984.16/18,919.92
  6. Step 6: Final answer
    x = 12,784.62

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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.