Home / 27,720.07-38,240.35-18,155.69

Finding the Fourth Proportional to 27,720.07, 38,240.35 and 18,155.69

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Solution

The fourth proportional to 27,720.07, 38,240.35 and 18,155.69 is: 25,046.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.07 : 38,240.35 = 18,155.69 : x
  2. Step 2: Convert to fraction form
    27,720.07/38,240.35 = 18,155.69/x
  3. Step 3: Cross multiply
    27,720.07x = 38,240.35 × 18,155.69
  4. Step 4: Simplify right side
    27,720.07x = 694,279,940.09
  5. Step 5: Solve for x
    x = 694,279,940.09/27,720.07
  6. Step 6: Final answer
    x = 25,046.11

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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.