Home / 20,273.74-27,990.92-18,145.58

Finding the Fourth Proportional to 20,273.74, 27,990.92 and 18,145.58

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Solution

The fourth proportional to 20,273.74, 27,990.92 and 18,145.58 is: 25,052.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.74 : 27,990.92 = 18,145.58 : x
  2. Step 2: Convert to fraction form
    20,273.74/27,990.92 = 18,145.58/x
  3. Step 3: Cross multiply
    20,273.74x = 27,990.92 × 18,145.58
  4. Step 4: Simplify right side
    20,273.74x = 507,911,593.47
  5. Step 5: Solve for x
    x = 507,911,593.47/20,273.74
  6. Step 6: Final answer
    x = 25,052.69

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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.