Home / 18,781.75-25,918.57-10,824.71

Finding the Fourth Proportional to 18,781.75, 25,918.57 and 10,824.71

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Solution

The fourth proportional to 18,781.75, 25,918.57 and 10,824.71 is: 14,937.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.75 : 25,918.57 = 10,824.71 : x
  2. Step 2: Convert to fraction form
    18,781.75/25,918.57 = 10,824.71/x
  3. Step 3: Cross multiply
    18,781.75x = 25,918.57 × 10,824.71
  4. Step 4: Simplify right side
    18,781.75x = 280,561,041.60
  5. Step 5: Solve for x
    x = 280,561,041.60/18,781.75
  6. Step 6: Final answer
    x = 14,937.96

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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.