Home / 12,942.96-17,860.86-7,277.54

Finding the Fourth Proportional to 12,942.96, 17,860.86 and 7,277.54

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Solution

The fourth proportional to 12,942.96, 17,860.86 and 7,277.54 is: 10,042.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.96 : 17,860.86 = 7,277.54 : x
  2. Step 2: Convert to fraction form
    12,942.96/17,860.86 = 7,277.54/x
  3. Step 3: Cross multiply
    12,942.96x = 17,860.86 × 7,277.54
  4. Step 4: Simplify right side
    12,942.96x = 129,983,123.08
  5. Step 5: Solve for x
    x = 129,983,123.08/12,942.96
  6. Step 6: Final answer
    x = 10,042.77

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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.