Home / 21,661.69-32,418.60-18,155.65

Finding the Fourth Proportional to 21,661.69, 32,418.60 and 18,155.65

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Solution

The fourth proportional to 21,661.69, 32,418.60 and 18,155.65 is: 27,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.69 : 32,418.60 = 18,155.65 : x
  2. Step 2: Convert to fraction form
    21,661.69/32,418.60 = 18,155.65/x
  3. Step 3: Cross multiply
    21,661.69x = 32,418.60 × 18,155.65
  4. Step 4: Simplify right side
    21,661.69x = 588,580,755.09
  5. Step 5: Solve for x
    x = 588,580,755.09/21,661.69
  6. Step 6: Final answer
    x = 27,171.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.