Home / 12,529.20-18,781.44-5,513

Finding the Fourth Proportional to 12,529.20, 18,781.44 and 5,513

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Solution

The fourth proportional to 12,529.20, 18,781.44 and 5,513 is: 8,264.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529.20 : 18,781.44 = 5,513 : x
  2. Step 2: Convert to fraction form
    12,529.20/18,781.44 = 5,513/x
  3. Step 3: Cross multiply
    12,529.20x = 18,781.44 × 5,513
  4. Step 4: Simplify right side
    12,529.20x = 103,542,078.72
  5. Step 5: Solve for x
    x = 103,542,078.72/12,529.20
  6. Step 6: Final answer
    x = 8,264.06

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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.