Home / 18,788.87-25,928.29-10,831.43

Finding the Fourth Proportional to 18,788.87, 25,928.29 and 10,831.43

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Solution

The fourth proportional to 18,788.87, 25,928.29 and 10,831.43 is: 14,947.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.87 : 25,928.29 = 10,831.43 : x
  2. Step 2: Convert to fraction form
    18,788.87/25,928.29 = 10,831.43/x
  3. Step 3: Cross multiply
    18,788.87x = 25,928.29 × 10,831.43
  4. Step 4: Simplify right side
    18,788.87x = 280,840,458.15
  5. Step 5: Solve for x
    x = 280,840,458.15/18,788.87
  6. Step 6: Final answer
    x = 14,947.17

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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.