Home / 21,440.80-32,122.26-20,974.24

Finding the Fourth Proportional to 21,440.80, 32,122.26 and 20,974.24

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Solution

The fourth proportional to 21,440.80, 32,122.26 and 20,974.24 is: 31,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.80 : 32,122.26 = 20,974.24 : x
  2. Step 2: Convert to fraction form
    21,440.80/32,122.26 = 20,974.24/x
  3. Step 3: Cross multiply
    21,440.80x = 32,122.26 × 20,974.24
  4. Step 4: Simplify right side
    21,440.80x = 673,739,990.58
  5. Step 5: Solve for x
    x = 673,739,990.58/21,440.80
  6. Step 6: Final answer
    x = 31,423.27

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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.