Home / 13,983.18-19,297.42-8,679.72

Finding the Fourth Proportional to 13,983.18, 19,297.42 and 8,679.72

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Solution

The fourth proportional to 13,983.18, 19,297.42 and 8,679.72 is: 11,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,983.18 : 19,297.42 = 8,679.72 : x
  2. Step 2: Convert to fraction form
    13,983.18/19,297.42 = 8,679.72/x
  3. Step 3: Cross multiply
    13,983.18x = 19,297.42 × 8,679.72
  4. Step 4: Simplify right side
    13,983.18x = 167,496,202.32
  5. Step 5: Solve for x
    x = 167,496,202.32/13,983.18
  6. Step 6: Final answer
    x = 11,978.41

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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.