Home / 27,780.57-38,336.22-15,847.79

Finding the Fourth Proportional to 27,780.57, 38,336.22 and 15,847.79

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Solution

The fourth proportional to 27,780.57, 38,336.22 and 15,847.79 is: 21,869.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.57 : 38,336.22 = 15,847.79 : x
  2. Step 2: Convert to fraction form
    27,780.57/38,336.22 = 15,847.79/x
  3. Step 3: Cross multiply
    27,780.57x = 38,336.22 × 15,847.79
  4. Step 4: Simplify right side
    27,780.57x = 607,544,172.27
  5. Step 5: Solve for x
    x = 607,544,172.27/27,780.57
  6. Step 6: Final answer
    x = 21,869.39

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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.