Home / 18,770.25-25,908.72-10,817.78

Finding the Fourth Proportional to 18,770.25, 25,908.72 and 10,817.78

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Solution

The fourth proportional to 18,770.25, 25,908.72 and 10,817.78 is: 14,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.25 : 25,908.72 = 10,817.78 : x
  2. Step 2: Convert to fraction form
    18,770.25/25,908.72 = 10,817.78/x
  3. Step 3: Cross multiply
    18,770.25x = 25,908.72 × 10,817.78
  4. Step 4: Simplify right side
    18,770.25x = 280,274,662.93
  5. Step 5: Solve for x
    x = 280,274,662.93/18,770.25
  6. Step 6: Final answer
    x = 14,931.85

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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.