Home / 12,457.86-17,183.30-7,979.64

Finding the Fourth Proportional to 12,457.86, 17,183.30 and 7,979.64

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Solution

The fourth proportional to 12,457.86, 17,183.30 and 7,979.64 is: 11,006.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.86 : 17,183.30 = 7,979.64 : x
  2. Step 2: Convert to fraction form
    12,457.86/17,183.30 = 7,979.64/x
  3. Step 3: Cross multiply
    12,457.86x = 17,183.30 × 7,979.64
  4. Step 4: Simplify right side
    12,457.86x = 137,116,548.01
  5. Step 5: Solve for x
    x = 137,116,548.01/12,457.86
  6. Step 6: Final answer
    x = 11,006.43

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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.