Home / 18,688.31-25,789.85-10,190.43

Finding the Fourth Proportional to 18,688.31, 25,789.85 and 10,190.43

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Solution

The fourth proportional to 18,688.31, 25,789.85 and 10,190.43 is: 14,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.31 : 25,789.85 = 10,190.43 : x
  2. Step 2: Convert to fraction form
    18,688.31/25,789.85 = 10,190.43/x
  3. Step 3: Cross multiply
    18,688.31x = 25,789.85 × 10,190.43
  4. Step 4: Simplify right side
    18,688.31x = 262,809,661.14
  5. Step 5: Solve for x
    x = 262,809,661.14/18,688.31
  6. Step 6: Final answer
    x = 14,062.78

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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.