Home / 13,531.91-18,674.73-8,156.03

Finding the Fourth Proportional to 13,531.91, 18,674.73 and 8,156.03

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Solution

The fourth proportional to 13,531.91, 18,674.73 and 8,156.03 is: 11,255.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.91 : 18,674.73 = 8,156.03 : x
  2. Step 2: Convert to fraction form
    13,531.91/18,674.73 = 8,156.03/x
  3. Step 3: Cross multiply
    13,531.91x = 18,674.73 × 8,156.03
  4. Step 4: Simplify right side
    13,531.91x = 152,311,564.75
  5. Step 5: Solve for x
    x = 152,311,564.75/13,531.91
  6. Step 6: Final answer
    x = 11,255.74

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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.