Home / 27,405.31-37,781.92-20,500.09

Finding the Fourth Proportional to 27,405.31, 37,781.92 and 20,500.09

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Solution

The fourth proportional to 27,405.31, 37,781.92 and 20,500.09 is: 28,262.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,405.31 : 37,781.92 = 20,500.09 : x
  2. Step 2: Convert to fraction form
    27,405.31/37,781.92 = 20,500.09/x
  3. Step 3: Cross multiply
    27,405.31x = 37,781.92 × 20,500.09
  4. Step 4: Simplify right side
    27,405.31x = 774,532,633.89
  5. Step 5: Solve for x
    x = 774,532,633.89/27,405.31
  6. Step 6: Final answer
    x = 28,262.14

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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.