Home / 10,877.50-15,011.26-6,161.78

Finding the Fourth Proportional to 10,877.50, 15,011.26 and 6,161.78

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Solution

The fourth proportional to 10,877.50, 15,011.26 and 6,161.78 is: 8,503.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.50 : 15,011.26 = 6,161.78 : x
  2. Step 2: Convert to fraction form
    10,877.50/15,011.26 = 6,161.78/x
  3. Step 3: Cross multiply
    10,877.50x = 15,011.26 × 6,161.78
  4. Step 4: Simplify right side
    10,877.50x = 92,496,103.77
  5. Step 5: Solve for x
    x = 92,496,103.77/10,877.50
  6. Step 6: Final answer
    x = 8,503.43

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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.