Home / 11,289.38-15,579.34-6,321.38

Finding the Fourth Proportional to 11,289.38, 15,579.34 and 6,321.38

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Solution

The fourth proportional to 11,289.38, 15,579.34 and 6,321.38 is: 8,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.38 : 15,579.34 = 6,321.38 : x
  2. Step 2: Convert to fraction form
    11,289.38/15,579.34 = 6,321.38/x
  3. Step 3: Cross multiply
    11,289.38x = 15,579.34 × 6,321.38
  4. Step 4: Simplify right side
    11,289.38x = 98,482,834.59
  5. Step 5: Solve for x
    x = 98,482,834.59/11,289.38
  6. Step 6: Final answer
    x = 8,723.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.