Home / 27,520.81-37,990.34-18,580.42

Finding the Fourth Proportional to 27,520.81, 37,990.34 and 18,580.42

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Solution

The fourth proportional to 27,520.81, 37,990.34 and 18,580.42 is: 25,648.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,520.81 : 37,990.34 = 18,580.42 : x
  2. Step 2: Convert to fraction form
    27,520.81/37,990.34 = 18,580.42/x
  3. Step 3: Cross multiply
    27,520.81x = 37,990.34 × 18,580.42
  4. Step 4: Simplify right side
    27,520.81x = 705,876,473.14
  5. Step 5: Solve for x
    x = 705,876,473.14/27,520.81
  6. Step 6: Final answer
    x = 25,648.83

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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.