Home / 18,781.26-25,923.90-10,828.80

Finding the Fourth Proportional to 18,781.26, 25,923.90 and 10,828.80

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Solution

The fourth proportional to 18,781.26, 25,923.90 and 10,828.80 is: 14,947.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.26 : 25,923.90 = 10,828.80 : x
  2. Step 2: Convert to fraction form
    18,781.26/25,923.90 = 10,828.80/x
  3. Step 3: Cross multiply
    18,781.26x = 25,923.90 × 10,828.80
  4. Step 4: Simplify right side
    18,781.26x = 280,724,728.32
  5. Step 5: Solve for x
    x = 280,724,728.32/18,781.26
  6. Step 6: Final answer
    x = 14,947.07

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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.