Home / 12,739.10-17,579.85-6,996.49

Finding the Fourth Proportional to 12,739.10, 17,579.85 and 6,996.49

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Solution

The fourth proportional to 12,739.10, 17,579.85 and 6,996.49 is: 9,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.10 : 17,579.85 = 6,996.49 : x
  2. Step 2: Convert to fraction form
    12,739.10/17,579.85 = 6,996.49/x
  3. Step 3: Cross multiply
    12,739.10x = 17,579.85 × 6,996.49
  4. Step 4: Simplify right side
    12,739.10x = 122,997,244.73
  5. Step 5: Solve for x
    x = 122,997,244.73/12,739.10
  6. Step 6: Final answer
    x = 9,655.10

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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.