Home / 13,939.91-19,236.37-8,274.90

Finding the Fourth Proportional to 13,939.91, 19,236.37 and 8,274.90

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Solution

The fourth proportional to 13,939.91, 19,236.37 and 8,274.90 is: 11,418.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.91 : 19,236.37 = 8,274.90 : x
  2. Step 2: Convert to fraction form
    13,939.91/19,236.37 = 8,274.90/x
  3. Step 3: Cross multiply
    13,939.91x = 19,236.37 × 8,274.90
  4. Step 4: Simplify right side
    13,939.91x = 159,179,038.11
  5. Step 5: Solve for x
    x = 159,179,038.11/13,939.91
  6. Step 6: Final answer
    x = 11,418.94

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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.