Home / 13,379.22-18,457.20-8,665.02

Finding the Fourth Proportional to 13,379.22, 18,457.20 and 8,665.02

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Solution

The fourth proportional to 13,379.22, 18,457.20 and 8,665.02 is: 11,953.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.22 : 18,457.20 = 8,665.02 : x
  2. Step 2: Convert to fraction form
    13,379.22/18,457.20 = 8,665.02/x
  3. Step 3: Cross multiply
    13,379.22x = 18,457.20 × 8,665.02
  4. Step 4: Simplify right side
    13,379.22x = 159,932,007.14
  5. Step 5: Solve for x
    x = 159,932,007.14/13,379.22
  6. Step 6: Final answer
    x = 11,953.76

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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.