Home / 18,943.40-26,132.64-11,387.72

Finding the Fourth Proportional to 18,943.40, 26,132.64 and 11,387.72

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Solution

The fourth proportional to 18,943.40, 26,132.64 and 11,387.72 is: 15,709.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.40 : 26,132.64 = 11,387.72 : x
  2. Step 2: Convert to fraction form
    18,943.40/26,132.64 = 11,387.72/x
  3. Step 3: Cross multiply
    18,943.40x = 26,132.64 × 11,387.72
  4. Step 4: Simplify right side
    18,943.40x = 297,591,187.18
  5. Step 5: Solve for x
    x = 297,591,187.18/18,943.40
  6. Step 6: Final answer
    x = 15,709.49

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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.