Home / 25,218.38-34,778.40-20,183.06

Finding the Fourth Proportional to 25,218.38, 34,778.40 and 20,183.06

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Solution

The fourth proportional to 25,218.38, 34,778.40 and 20,183.06 is: 27,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,218.38 : 34,778.40 = 20,183.06 : x
  2. Step 2: Convert to fraction form
    25,218.38/34,778.40 = 20,183.06/x
  3. Step 3: Cross multiply
    25,218.38x = 34,778.40 × 20,183.06
  4. Step 4: Simplify right side
    25,218.38x = 701,934,533.90
  5. Step 5: Solve for x
    x = 701,934,533.90/25,218.38
  6. Step 6: Final answer
    x = 27,834.24

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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.