Home / 11,997.79-16,557.12-6,620.48

Finding the Fourth Proportional to 11,997.79, 16,557.12 and 6,620.48

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Solution

The fourth proportional to 11,997.79, 16,557.12 and 6,620.48 is: 9,136.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,997.79 : 16,557.12 = 6,620.48 : x
  2. Step 2: Convert to fraction form
    11,997.79/16,557.12 = 6,620.48/x
  3. Step 3: Cross multiply
    11,997.79x = 16,557.12 × 6,620.48
  4. Step 4: Simplify right side
    11,997.79x = 109,616,016.22
  5. Step 5: Solve for x
    x = 109,616,016.22/11,997.79
  6. Step 6: Final answer
    x = 9,136.35

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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.