Home / 12,193.32-18,289.98-3,428.28

Finding the Fourth Proportional to 12,193.32, 18,289.98 and 3,428.28

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Solution

The fourth proportional to 12,193.32, 18,289.98 and 3,428.28 is: 5,142.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,193.32 : 18,289.98 = 3,428.28 : x
  2. Step 2: Convert to fraction form
    12,193.32/18,289.98 = 3,428.28/x
  3. Step 3: Cross multiply
    12,193.32x = 18,289.98 × 3,428.28
  4. Step 4: Simplify right side
    12,193.32x = 62,703,172.63
  5. Step 5: Solve for x
    x = 62,703,172.63/12,193.32
  6. Step 6: Final answer
    x = 5,142.42

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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.