Home / 27,780.24-38,335.80-15,847.44

Finding the Fourth Proportional to 27,780.24, 38,335.80 and 15,847.44

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Solution

The fourth proportional to 27,780.24, 38,335.80 and 15,847.44 is: 21,868.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.24 : 38,335.80 = 15,847.44 : x
  2. Step 2: Convert to fraction form
    27,780.24/38,335.80 = 15,847.44/x
  3. Step 3: Cross multiply
    27,780.24x = 38,335.80 × 15,847.44
  4. Step 4: Simplify right side
    27,780.24x = 607,524,290.35
  5. Step 5: Solve for x
    x = 607,524,290.35/27,780.24
  6. Step 6: Final answer
    x = 21,868.94

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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.