Home / 12,223.28-18,334.89-2,989.28

Finding the Fourth Proportional to 12,223.28, 18,334.89 and 2,989.28

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Solution

The fourth proportional to 12,223.28, 18,334.89 and 2,989.28 is: 4,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.28 : 18,334.89 = 2,989.28 : x
  2. Step 2: Convert to fraction form
    12,223.28/18,334.89 = 2,989.28/x
  3. Step 3: Cross multiply
    12,223.28x = 18,334.89 × 2,989.28
  4. Step 4: Simplify right side
    12,223.28x = 54,808,119.98
  5. Step 5: Solve for x
    x = 54,808,119.98/12,223.28
  6. Step 6: Final answer
    x = 4,483.91

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Double scale
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Similar ratio
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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.