Home / 13,723.09-18,938.22-8,414.76

Finding the Fourth Proportional to 13,723.09, 18,938.22 and 8,414.76

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Solution

The fourth proportional to 13,723.09, 18,938.22 and 8,414.76 is: 11,612.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.09 : 18,938.22 = 8,414.76 : x
  2. Step 2: Convert to fraction form
    13,723.09/18,938.22 = 8,414.76/x
  3. Step 3: Cross multiply
    13,723.09x = 18,938.22 × 8,414.76
  4. Step 4: Simplify right side
    13,723.09x = 159,360,576.13
  5. Step 5: Solve for x
    x = 159,360,576.13/13,723.09
  6. Step 6: Final answer
    x = 11,612.59

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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.