Home / 27,661.88-38,173.40-15,724.92

Finding the Fourth Proportional to 27,661.88, 38,173.40 and 15,724.92

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Solution

The fourth proportional to 27,661.88, 38,173.40 and 15,724.92 is: 21,700.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.88 : 38,173.40 = 15,724.92 : x
  2. Step 2: Convert to fraction form
    27,661.88/38,173.40 = 15,724.92/x
  3. Step 3: Cross multiply
    27,661.88x = 38,173.40 × 15,724.92
  4. Step 4: Simplify right side
    27,661.88x = 600,273,661.13
  5. Step 5: Solve for x
    x = 600,273,661.13/27,661.88
  6. Step 6: Final answer
    x = 21,700.39

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Double scale
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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.