Home / 20,121.65-27,764.63-11,622.42

Finding the Fourth Proportional to 20,121.65, 27,764.63 and 11,622.42

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Solution

The fourth proportional to 20,121.65, 27,764.63 and 11,622.42 is: 16,037.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.65 : 27,764.63 = 11,622.42 : x
  2. Step 2: Convert to fraction form
    20,121.65/27,764.63 = 11,622.42/x
  3. Step 3: Cross multiply
    20,121.65x = 27,764.63 × 11,622.42
  4. Step 4: Simplify right side
    20,121.65x = 322,692,176.48
  5. Step 5: Solve for x
    x = 322,692,176.48/20,121.65
  6. Step 6: Final answer
    x = 16,037.06

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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.