Home / 13,221.93-18,246.11-7,558.97

Finding the Fourth Proportional to 13,221.93, 18,246.11 and 7,558.97

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Solution

The fourth proportional to 13,221.93, 18,246.11 and 7,558.97 is: 10,431.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.93 : 18,246.11 = 7,558.97 : x
  2. Step 2: Convert to fraction form
    13,221.93/18,246.11 = 7,558.97/x
  3. Step 3: Cross multiply
    13,221.93x = 18,246.11 × 7,558.97
  4. Step 4: Simplify right side
    13,221.93x = 137,921,814.23
  5. Step 5: Solve for x
    x = 137,921,814.23/13,221.93
  6. Step 6: Final answer
    x = 10,431.29

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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.