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Finding the Fourth Proportional to 18,957.87, 26,161.95 and 10,889.37

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Solution

The fourth proportional to 18,957.87, 26,161.95 and 10,889.37 is: 15,027.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.87 : 26,161.95 = 10,889.37 : x
  2. Step 2: Convert to fraction form
    18,957.87/26,161.95 = 10,889.37/x
  3. Step 3: Cross multiply
    18,957.87x = 26,161.95 × 10,889.37
  4. Step 4: Simplify right side
    18,957.87x = 284,887,153.47
  5. Step 5: Solve for x
    x = 284,887,153.47/18,957.87
  6. Step 6: Final answer
    x = 15,027.38

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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.