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Finding the Fourth Proportional to 18,803.71, 28,177.84 and 10,472.25

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Solution

The fourth proportional to 18,803.71, 28,177.84 and 10,472.25 is: 15,692.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.71 : 28,177.84 = 10,472.25 : x
  2. Step 2: Convert to fraction form
    18,803.71/28,177.84 = 10,472.25/x
  3. Step 3: Cross multiply
    18,803.71x = 28,177.84 × 10,472.25
  4. Step 4: Simplify right side
    18,803.71x = 295,085,503.70
  5. Step 5: Solve for x
    x = 295,085,503.70/18,803.71
  6. Step 6: Final answer
    x = 15,692.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.