Home / 22,137.81-33,215.60-8,991.21

Finding the Fourth Proportional to 22,137.81, 33,215.60 and 8,991.21

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Solution

The fourth proportional to 22,137.81, 33,215.60 and 8,991.21 is: 13,490.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,137.81 : 33,215.60 = 8,991.21 : x
  2. Step 2: Convert to fraction form
    22,137.81/33,215.60 = 8,991.21/x
  3. Step 3: Cross multiply
    22,137.81x = 33,215.60 × 8,991.21
  4. Step 4: Simplify right side
    22,137.81x = 298,648,434.88
  5. Step 5: Solve for x
    x = 298,648,434.88/22,137.81
  6. Step 6: Final answer
    x = 13,490.42

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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.