Home / 12,143.72-18,214.73-4,352.78

Finding the Fourth Proportional to 12,143.72, 18,214.73 and 4,352.78

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Solution

The fourth proportional to 12,143.72, 18,214.73 and 4,352.78 is: 6,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.72 : 18,214.73 = 4,352.78 : x
  2. Step 2: Convert to fraction form
    12,143.72/18,214.73 = 4,352.78/x
  3. Step 3: Cross multiply
    12,143.72x = 18,214.73 × 4,352.78
  4. Step 4: Simplify right side
    12,143.72x = 79,284,712.45
  5. Step 5: Solve for x
    x = 79,284,712.45/12,143.72
  6. Step 6: Final answer
    x = 6,528.87

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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.