Home / 12,193.72-18,291.66-3,428.72

Finding the Fourth Proportional to 12,193.72, 18,291.66 and 3,428.72

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Solution

The fourth proportional to 12,193.72, 18,291.66 and 3,428.72 is: 5,143.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,193.72 : 18,291.66 = 3,428.72 : x
  2. Step 2: Convert to fraction form
    12,193.72/18,291.66 = 3,428.72/x
  3. Step 3: Cross multiply
    12,193.72x = 18,291.66 × 3,428.72
  4. Step 4: Simplify right side
    12,193.72x = 62,716,980.48
  5. Step 5: Solve for x
    x = 62,716,980.48/12,193.72
  6. Step 6: Final answer
    x = 5,143.38

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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.