Home / 12,487.77-18,731.66-3,728.84

Finding the Fourth Proportional to 12,487.77, 18,731.66 and 3,728.84

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Solution

The fourth proportional to 12,487.77, 18,731.66 and 3,728.84 is: 5,593.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.77 : 18,731.66 = 3,728.84 : x
  2. Step 2: Convert to fraction form
    12,487.77/18,731.66 = 3,728.84/x
  3. Step 3: Cross multiply
    12,487.77x = 18,731.66 × 3,728.84
  4. Step 4: Simplify right side
    12,487.77x = 69,847,250.77
  5. Step 5: Solve for x
    x = 69,847,250.77/12,487.77
  6. Step 6: Final answer
    x = 5,593.25

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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.