Home / 18,219.12-25,124.76-16,249.20

Finding the Fourth Proportional to 18,219.12, 25,124.76 and 16,249.20

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Solution

The fourth proportional to 18,219.12, 25,124.76 and 16,249.20 is: 22,408.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.12 : 25,124.76 = 16,249.20 : x
  2. Step 2: Convert to fraction form
    18,219.12/25,124.76 = 16,249.20/x
  3. Step 3: Cross multiply
    18,219.12x = 25,124.76 × 16,249.20
  4. Step 4: Simplify right side
    18,219.12x = 408,257,250.19
  5. Step 5: Solve for x
    x = 408,257,250.19/18,219.12
  6. Step 6: Final answer
    x = 22,408.18

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Half scale
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Double scale
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Similar ratio
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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.