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Finding the Fourth Proportional to 10,877.72, 15,010.72 and 6,161.88

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Solution

The fourth proportional to 10,877.72, 15,010.72 and 6,161.88 is: 8,503.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.72 : 15,010.72 = 6,161.88 : x
  2. Step 2: Convert to fraction form
    10,877.72/15,010.72 = 6,161.88/x
  3. Step 3: Cross multiply
    10,877.72x = 15,010.72 × 6,161.88
  4. Step 4: Simplify right side
    10,877.72x = 92,494,255.35
  5. Step 5: Solve for x
    x = 92,494,255.35/10,877.72
  6. Step 6: Final answer
    x = 8,503.09

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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.