Home / 12,528.96-18,793.85-4,209.05

Finding the Fourth Proportional to 12,528.96, 18,793.85 and 4,209.05

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Solution

The fourth proportional to 12,528.96, 18,793.85 and 4,209.05 is: 6,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.96 : 18,793.85 = 4,209.05 : x
  2. Step 2: Convert to fraction form
    12,528.96/18,793.85 = 4,209.05/x
  3. Step 3: Cross multiply
    12,528.96x = 18,793.85 × 4,209.05
  4. Step 4: Simplify right side
    12,528.96x = 79,104,139.33
  5. Step 5: Solve for x
    x = 79,104,139.33/12,528.96
  6. Step 6: Final answer
    x = 6,313.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.