Home / 15,690.06-21,652.20-8,519.82

Finding the Fourth Proportional to 15,690.06, 21,652.20 and 8,519.82

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Solution

The fourth proportional to 15,690.06, 21,652.20 and 8,519.82 is: 11,757.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.06 : 21,652.20 = 8,519.82 : x
  2. Step 2: Convert to fraction form
    15,690.06/21,652.20 = 8,519.82/x
  3. Step 3: Cross multiply
    15,690.06x = 21,652.20 × 8,519.82
  4. Step 4: Simplify right side
    15,690.06x = 184,472,846.60
  5. Step 5: Solve for x
    x = 184,472,846.60/15,690.06
  6. Step 6: Final answer
    x = 11,757.31

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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.