Home / 12,520.82-18,781.14-5,027.76

Finding the Fourth Proportional to 12,520.82, 18,781.14 and 5,027.76

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Solution

The fourth proportional to 12,520.82, 18,781.14 and 5,027.76 is: 7,541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.82 : 18,781.14 = 5,027.76 : x
  2. Step 2: Convert to fraction form
    12,520.82/18,781.14 = 5,027.76/x
  3. Step 3: Cross multiply
    12,520.82x = 18,781.14 × 5,027.76
  4. Step 4: Simplify right side
    12,520.82x = 94,427,064.45
  5. Step 5: Solve for x
    x = 94,427,064.45/12,520.82
  6. Step 6: Final answer
    x = 7,541.61

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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.