Home / 16,990.14-23,438.70-10,938.21

Finding the Fourth Proportional to 16,990.14, 23,438.70 and 10,938.21

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Solution

The fourth proportional to 16,990.14, 23,438.70 and 10,938.21 is: 15,089.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.14 : 23,438.70 = 10,938.21 : x
  2. Step 2: Convert to fraction form
    16,990.14/23,438.70 = 10,938.21/x
  3. Step 3: Cross multiply
    16,990.14x = 23,438.70 × 10,938.21
  4. Step 4: Simplify right side
    16,990.14x = 256,377,422.73
  5. Step 5: Solve for x
    x = 256,377,422.73/16,990.14
  6. Step 6: Final answer
    x = 15,089.78

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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.