Home / 20,120.30-27,759.58-11,621.29

Finding the Fourth Proportional to 20,120.30, 27,759.58 and 11,621.29

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Solution

The fourth proportional to 20,120.30, 27,759.58 and 11,621.29 is: 16,033.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.30 : 27,759.58 = 11,621.29 : x
  2. Step 2: Convert to fraction form
    20,120.30/27,759.58 = 11,621.29/x
  3. Step 3: Cross multiply
    20,120.30x = 27,759.58 × 11,621.29
  4. Step 4: Simplify right side
    20,120.30x = 322,602,129.46
  5. Step 5: Solve for x
    x = 322,602,129.46/20,120.30
  6. Step 6: Final answer
    x = 16,033.66

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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.