Home / 18,789.10-25,928.27-10,831.66

Finding the Fourth Proportional to 18,789.10, 25,928.27 and 10,831.66

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Solution

The fourth proportional to 18,789.10, 25,928.27 and 10,831.66 is: 14,947.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.10 : 25,928.27 = 10,831.66 : x
  2. Step 2: Convert to fraction form
    18,789.10/25,928.27 = 10,831.66/x
  3. Step 3: Cross multiply
    18,789.10x = 25,928.27 × 10,831.66
  4. Step 4: Simplify right side
    18,789.10x = 280,846,205.03
  5. Step 5: Solve for x
    x = 280,846,205.03/18,789.10
  6. Step 6: Final answer
    x = 14,947.29

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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.