Home / 12,721.70-17,544.45-7,942.08

Finding the Fourth Proportional to 12,721.70, 17,544.45 and 7,942.08

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Solution

The fourth proportional to 12,721.70, 17,544.45 and 7,942.08 is: 10,952.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.70 : 17,544.45 = 7,942.08 : x
  2. Step 2: Convert to fraction form
    12,721.70/17,544.45 = 7,942.08/x
  3. Step 3: Cross multiply
    12,721.70x = 17,544.45 × 7,942.08
  4. Step 4: Simplify right side
    12,721.70x = 139,339,337.73
  5. Step 5: Solve for x
    x = 139,339,337.73/12,721.70
  6. Step 6: Final answer
    x = 10,952.89

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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.