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Finding the Fourth Proportional to 18,876.87, 26,039.31 and 11,703.51

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Solution

The fourth proportional to 18,876.87, 26,039.31 and 11,703.51 is: 16,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.87 : 26,039.31 = 11,703.51 : x
  2. Step 2: Convert to fraction form
    18,876.87/26,039.31 = 11,703.51/x
  3. Step 3: Cross multiply
    18,876.87x = 26,039.31 × 11,703.51
  4. Step 4: Simplify right side
    18,876.87x = 304,751,324.98
  5. Step 5: Solve for x
    x = 304,751,324.98/18,876.87
  6. Step 6: Final answer
    x = 16,144.17

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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.