Home / 18,639.13-25,721.99-10,680.97

Finding the Fourth Proportional to 18,639.13, 25,721.99 and 10,680.97

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Solution

The fourth proportional to 18,639.13, 25,721.99 and 10,680.97 is: 14,739.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.13 : 25,721.99 = 10,680.97 : x
  2. Step 2: Convert to fraction form
    18,639.13/25,721.99 = 10,680.97/x
  3. Step 3: Cross multiply
    18,639.13x = 25,721.99 × 10,680.97
  4. Step 4: Simplify right side
    18,639.13x = 274,735,750.13
  5. Step 5: Solve for x
    x = 274,735,750.13/18,639.13
  6. Step 6: Final answer
    x = 14,739.73

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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.