Home / 10,789.56-16,188.78-4,220.36

Finding the Fourth Proportional to 10,789.56, 16,188.78 and 4,220.36

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Solution

The fourth proportional to 10,789.56, 16,188.78 and 4,220.36 is: 6,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,789.56 : 16,188.78 = 4,220.36 : x
  2. Step 2: Convert to fraction form
    10,789.56/16,188.78 = 4,220.36/x
  3. Step 3: Cross multiply
    10,789.56x = 16,188.78 × 4,220.36
  4. Step 4: Simplify right side
    10,789.56x = 68,322,398.62
  5. Step 5: Solve for x
    x = 68,322,398.62/10,789.56
  6. Step 6: Final answer
    x = 6,332.27

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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.