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Finding the Fourth Proportional to 18,692.24, 28,041.60 and 18,672.80

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Solution

The fourth proportional to 18,692.24, 28,041.60 and 18,672.80 is: 28,012.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.24 : 28,041.60 = 18,672.80 : x
  2. Step 2: Convert to fraction form
    18,692.24/28,041.60 = 18,672.80/x
  3. Step 3: Cross multiply
    18,692.24x = 28,041.60 × 18,672.80
  4. Step 4: Simplify right side
    18,692.24x = 523,615,188.48
  5. Step 5: Solve for x
    x = 523,615,188.48/18,692.24
  6. Step 6: Final answer
    x = 28,012.44

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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.