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Finding the Fourth Proportional to 10,876.80, 15,010.02 and 6,161.40

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Solution

The fourth proportional to 10,876.80, 15,010.02 and 6,161.40 is: 8,502.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.80 : 15,010.02 = 6,161.40 : x
  2. Step 2: Convert to fraction form
    10,876.80/15,010.02 = 6,161.40/x
  3. Step 3: Cross multiply
    10,876.80x = 15,010.02 × 6,161.40
  4. Step 4: Simplify right side
    10,876.80x = 92,482,737.23
  5. Step 5: Solve for x
    x = 92,482,737.23/10,876.80
  6. Step 6: Final answer
    x = 8,502.75

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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.