Home / 13,939.18-19,227.31-8,269.91

Finding the Fourth Proportional to 13,939.18, 19,227.31 and 8,269.91

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Solution

The fourth proportional to 13,939.18, 19,227.31 and 8,269.91 is: 11,407.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.18 : 19,227.31 = 8,269.91 : x
  2. Step 2: Convert to fraction form
    13,939.18/19,227.31 = 8,269.91/x
  3. Step 3: Cross multiply
    13,939.18x = 19,227.31 × 8,269.91
  4. Step 4: Simplify right side
    13,939.18x = 159,008,123.24
  5. Step 5: Solve for x
    x = 159,008,123.24/13,939.18
  6. Step 6: Final answer
    x = 11,407.28

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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.