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Finding the Fourth Proportional to 22,231.76, 33,356.28 and 8,390.48

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Solution

The fourth proportional to 22,231.76, 33,356.28 and 8,390.48 is: 12,588.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,231.76 : 33,356.28 = 8,390.48 : x
  2. Step 2: Convert to fraction form
    22,231.76/33,356.28 = 8,390.48/x
  3. Step 3: Cross multiply
    22,231.76x = 33,356.28 × 8,390.48
  4. Step 4: Simplify right side
    22,231.76x = 279,875,200.21
  5. Step 5: Solve for x
    x = 279,875,200.21/22,231.76
  6. Step 6: Final answer
    x = 12,588.98

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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.