Home / 12,742.29-18,984.26-12,114.92

Finding the Fourth Proportional to 12,742.29, 18,984.26 and 12,114.92

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Solution

The fourth proportional to 12,742.29, 18,984.26 and 12,114.92 is: 18,049.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.29 : 18,984.26 = 12,114.92 : x
  2. Step 2: Convert to fraction form
    12,742.29/18,984.26 = 12,114.92/x
  3. Step 3: Cross multiply
    12,742.29x = 18,984.26 × 12,114.92
  4. Step 4: Simplify right side
    12,742.29x = 229,992,868.91
  5. Step 5: Solve for x
    x = 229,992,868.91/12,742.29
  6. Step 6: Final answer
    x = 18,049.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.