Home / 20,862.52-31,107.68-18,544.30

Finding the Fourth Proportional to 20,862.52, 31,107.68 and 18,544.30

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Solution

The fourth proportional to 20,862.52, 31,107.68 and 18,544.30 is: 27,651.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.52 : 31,107.68 = 18,544.30 : x
  2. Step 2: Convert to fraction form
    20,862.52/31,107.68 = 18,544.30/x
  3. Step 3: Cross multiply
    20,862.52x = 31,107.68 × 18,544.30
  4. Step 4: Simplify right side
    20,862.52x = 576,870,150.22
  5. Step 5: Solve for x
    x = 576,870,150.22/20,862.52
  6. Step 6: Final answer
    x = 27,651.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.