Home / 18,122.94-27,140.67-17,991.72

Finding the Fourth Proportional to 18,122.94, 27,140.67 and 17,991.72

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Solution

The fourth proportional to 18,122.94, 27,140.67 and 17,991.72 is: 26,944.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.94 : 27,140.67 = 17,991.72 : x
  2. Step 2: Convert to fraction form
    18,122.94/27,140.67 = 17,991.72/x
  3. Step 3: Cross multiply
    18,122.94x = 27,140.67 × 17,991.72
  4. Step 4: Simplify right side
    18,122.94x = 488,307,335.25
  5. Step 5: Solve for x
    x = 488,307,335.25/18,122.94
  6. Step 6: Final answer
    x = 26,944.16

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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.