Home / 18,943.76-26,137.70-11,388.57

Finding the Fourth Proportional to 18,943.76, 26,137.70 and 11,388.57

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Solution

The fourth proportional to 18,943.76, 26,137.70 and 11,388.57 is: 15,713.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.76 : 26,137.70 = 11,388.57 : x
  2. Step 2: Convert to fraction form
    18,943.76/26,137.70 = 11,388.57/x
  3. Step 3: Cross multiply
    18,943.76x = 26,137.70 × 11,388.57
  4. Step 4: Simplify right side
    18,943.76x = 297,670,969.15
  5. Step 5: Solve for x
    x = 297,670,969.15/18,943.76
  6. Step 6: Final answer
    x = 15,713.41

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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.