Home / 12,558.22-17,331.22-8,301.90

Finding the Fourth Proportional to 12,558.22, 17,331.22 and 8,301.90

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Solution

The fourth proportional to 12,558.22, 17,331.22 and 8,301.90 is: 11,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.22 : 17,331.22 = 8,301.90 : x
  2. Step 2: Convert to fraction form
    12,558.22/17,331.22 = 8,301.90/x
  3. Step 3: Cross multiply
    12,558.22x = 17,331.22 × 8,301.90
  4. Step 4: Simplify right side
    12,558.22x = 143,882,080.94
  5. Step 5: Solve for x
    x = 143,882,080.94/12,558.22
  6. Step 6: Final answer
    x = 11,457.20

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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.