Home / 12,276.14-16,942.90-7,238.76

Finding the Fourth Proportional to 12,276.14, 16,942.90 and 7,238.76

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Solution

The fourth proportional to 12,276.14, 16,942.90 and 7,238.76 is: 9,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.14 : 16,942.90 = 7,238.76 : x
  2. Step 2: Convert to fraction form
    12,276.14/16,942.90 = 7,238.76/x
  3. Step 3: Cross multiply
    12,276.14x = 16,942.90 × 7,238.76
  4. Step 4: Simplify right side
    12,276.14x = 122,645,586.80
  5. Step 5: Solve for x
    x = 122,645,586.80/12,276.14
  6. Step 6: Final answer
    x = 9,990.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.