Home / 21,089.43-31,638.94-7,049.57

Finding the Fourth Proportional to 21,089.43, 31,638.94 and 7,049.57

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Solution

The fourth proportional to 21,089.43, 31,638.94 and 7,049.57 is: 10,575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.43 : 31,638.94 = 7,049.57 : x
  2. Step 2: Convert to fraction form
    21,089.43/31,638.94 = 7,049.57/x
  3. Step 3: Cross multiply
    21,089.43x = 31,638.94 × 7,049.57
  4. Step 4: Simplify right side
    21,089.43x = 223,040,746.44
  5. Step 5: Solve for x
    x = 223,040,746.44/21,089.43
  6. Step 6: Final answer
    x = 10,575.95

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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.