Home / 27,661.74-38,171.70-15,723.42

Finding the Fourth Proportional to 27,661.74, 38,171.70 and 15,723.42

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Solution

The fourth proportional to 27,661.74, 38,171.70 and 15,723.42 is: 21,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.74 : 38,171.70 = 15,723.42 : x
  2. Step 2: Convert to fraction form
    27,661.74/38,171.70 = 15,723.42/x
  3. Step 3: Cross multiply
    27,661.74x = 38,171.70 × 15,723.42
  4. Step 4: Simplify right side
    27,661.74x = 600,189,671.21
  5. Step 5: Solve for x
    x = 600,189,671.21/27,661.74
  6. Step 6: Final answer
    x = 21,697.47

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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.