Home / 23,145.68-31,993.52-21,308.56

Finding the Fourth Proportional to 23,145.68, 31,993.52 and 21,308.56

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Solution

The fourth proportional to 23,145.68, 31,993.52 and 21,308.56 is: 29,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,145.68 : 31,993.52 = 21,308.56 : x
  2. Step 2: Convert to fraction form
    23,145.68/31,993.52 = 21,308.56/x
  3. Step 3: Cross multiply
    23,145.68x = 31,993.52 × 21,308.56
  4. Step 4: Simplify right side
    23,145.68x = 681,735,840.53
  5. Step 5: Solve for x
    x = 681,735,840.53/23,145.68
  6. Step 6: Final answer
    x = 29,454.13

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Similar ratio
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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.