Home / 11,869.15-16,381.48-7,153.43

Finding the Fourth Proportional to 11,869.15, 16,381.48 and 7,153.43

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Solution

The fourth proportional to 11,869.15, 16,381.48 and 7,153.43 is: 9,872.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.15 : 16,381.48 = 7,153.43 : x
  2. Step 2: Convert to fraction form
    11,869.15/16,381.48 = 7,153.43/x
  3. Step 3: Cross multiply
    11,869.15x = 16,381.48 × 7,153.43
  4. Step 4: Simplify right side
    11,869.15x = 117,183,793.55
  5. Step 5: Solve for x
    x = 117,183,793.55/11,869.15
  6. Step 6: Final answer
    x = 9,872.97

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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.