Home / 18,935.10-26,155.17-15,363.41

Finding the Fourth Proportional to 18,935.10, 26,155.17 and 15,363.41

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Solution

The fourth proportional to 18,935.10, 26,155.17 and 15,363.41 is: 21,221.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.10 : 26,155.17 = 15,363.41 : x
  2. Step 2: Convert to fraction form
    18,935.10/26,155.17 = 15,363.41/x
  3. Step 3: Cross multiply
    18,935.10x = 26,155.17 × 15,363.41
  4. Step 4: Simplify right side
    18,935.10x = 401,832,469.55
  5. Step 5: Solve for x
    x = 401,832,469.55/18,935.10
  6. Step 6: Final answer
    x = 21,221.57

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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.