Home / 12,548.64-18,817.32-3,781.68

Finding the Fourth Proportional to 12,548.64, 18,817.32 and 3,781.68

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Solution

The fourth proportional to 12,548.64, 18,817.32 and 3,781.68 is: 5,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,548.64 : 18,817.32 = 3,781.68 : x
  2. Step 2: Convert to fraction form
    12,548.64/18,817.32 = 3,781.68/x
  3. Step 3: Cross multiply
    12,548.64x = 18,817.32 × 3,781.68
  4. Step 4: Simplify right side
    12,548.64x = 71,161,082.70
  5. Step 5: Solve for x
    x = 71,161,082.70/12,548.64
  6. Step 6: Final answer
    x = 5,670.82

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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.