Home / 13,679.02-18,873.57-8,371.90

Finding the Fourth Proportional to 13,679.02, 18,873.57 and 8,371.90

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Solution

The fourth proportional to 13,679.02, 18,873.57 and 8,371.90 is: 11,551.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.02 : 18,873.57 = 8,371.90 : x
  2. Step 2: Convert to fraction form
    13,679.02/18,873.57 = 8,371.90/x
  3. Step 3: Cross multiply
    13,679.02x = 18,873.57 × 8,371.90
  4. Step 4: Simplify right side
    13,679.02x = 158,007,640.68
  5. Step 5: Solve for x
    x = 158,007,640.68/13,679.02
  6. Step 6: Final answer
    x = 11,551.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.