Home / 21,735.14-30,008.68-16,689.85

Finding the Fourth Proportional to 21,735.14, 30,008.68 and 16,689.85

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Solution

The fourth proportional to 21,735.14, 30,008.68 and 16,689.85 is: 23,042.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,735.14 : 30,008.68 = 16,689.85 : x
  2. Step 2: Convert to fraction form
    21,735.14/30,008.68 = 16,689.85/x
  3. Step 3: Cross multiply
    21,735.14x = 30,008.68 × 16,689.85
  4. Step 4: Simplify right side
    21,735.14x = 500,840,251.15
  5. Step 5: Solve for x
    x = 500,840,251.15/21,735.14
  6. Step 6: Final answer
    x = 23,042.89

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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.