Home / 27,739.16-38,265.54-18,789.80

Finding the Fourth Proportional to 27,739.16, 38,265.54 and 18,789.80

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Solution

The fourth proportional to 27,739.16, 38,265.54 and 18,789.80 is: 25,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.16 : 38,265.54 = 18,789.80 : x
  2. Step 2: Convert to fraction form
    27,739.16/38,265.54 = 18,789.80/x
  3. Step 3: Cross multiply
    27,739.16x = 38,265.54 × 18,789.80
  4. Step 4: Simplify right side
    27,739.16x = 719,001,843.49
  5. Step 5: Solve for x
    x = 719,001,843.49/27,739.16
  6. Step 6: Final answer
    x = 25,920.10

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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.