Home / 21,033.14-31,521.68-9,942.78

Finding the Fourth Proportional to 21,033.14, 31,521.68 and 9,942.78

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Solution

The fourth proportional to 21,033.14, 31,521.68 and 9,942.78 is: 14,900.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.14 : 31,521.68 = 9,942.78 : x
  2. Step 2: Convert to fraction form
    21,033.14/31,521.68 = 9,942.78/x
  3. Step 3: Cross multiply
    21,033.14x = 31,521.68 × 9,942.78
  4. Step 4: Simplify right side
    21,033.14x = 313,413,129.47
  5. Step 5: Solve for x
    x = 313,413,129.47/21,033.14
  6. Step 6: Final answer
    x = 14,900.92

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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.