Home / 20,837.70-31,324.28-16,722.80

Finding the Fourth Proportional to 20,837.70, 31,324.28 and 16,722.80

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Solution

The fourth proportional to 20,837.70, 31,324.28 and 16,722.80 is: 25,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.70 : 31,324.28 = 16,722.80 : x
  2. Step 2: Convert to fraction form
    20,837.70/31,324.28 = 16,722.80/x
  3. Step 3: Cross multiply
    20,837.70x = 31,324.28 × 16,722.80
  4. Step 4: Simplify right side
    20,837.70x = 523,829,554.77
  5. Step 5: Solve for x
    x = 523,829,554.77/20,837.70
  6. Step 6: Final answer
    x = 25,138.55

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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.