Home / 18,938.11-26,131.54-11,382.64

Finding the Fourth Proportional to 18,938.11, 26,131.54 and 11,382.64

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Solution

The fourth proportional to 18,938.11, 26,131.54 and 11,382.64 is: 15,706.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.11 : 26,131.54 = 11,382.64 : x
  2. Step 2: Convert to fraction form
    18,938.11/26,131.54 = 11,382.64/x
  3. Step 3: Cross multiply
    18,938.11x = 26,131.54 × 11,382.64
  4. Step 4: Simplify right side
    18,938.11x = 297,445,912.47
  5. Step 5: Solve for x
    x = 297,445,912.47/18,938.11
  6. Step 6: Final answer
    x = 15,706.21

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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.