Home / 11,639.85-17,445.89-8,110.74

Finding the Fourth Proportional to 11,639.85, 17,445.89 and 8,110.74

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Solution

The fourth proportional to 11,639.85, 17,445.89 and 8,110.74 is: 12,156.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.85 : 17,445.89 = 8,110.74 : x
  2. Step 2: Convert to fraction form
    11,639.85/17,445.89 = 8,110.74/x
  3. Step 3: Cross multiply
    11,639.85x = 17,445.89 × 8,110.74
  4. Step 4: Simplify right side
    11,639.85x = 141,499,037.30
  5. Step 5: Solve for x
    x = 141,499,037.30/11,639.85
  6. Step 6: Final answer
    x = 12,156.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.