Home / 12,193.30-18,290.01-3,428.29

Finding the Fourth Proportional to 12,193.30, 18,290.01 and 3,428.29

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Solution

The fourth proportional to 12,193.30, 18,290.01 and 3,428.29 is: 5,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,193.30 : 18,290.01 = 3,428.29 : x
  2. Step 2: Convert to fraction form
    12,193.30/18,290.01 = 3,428.29/x
  3. Step 3: Cross multiply
    12,193.30x = 18,290.01 × 3,428.29
  4. Step 4: Simplify right side
    12,193.30x = 62,703,458.38
  5. Step 5: Solve for x
    x = 62,703,458.38/12,193.30
  6. Step 6: Final answer
    x = 5,142.45

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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.