Home / 11,148.72-15,385.71-6,671.61

Finding the Fourth Proportional to 11,148.72, 15,385.71 and 6,671.61

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Solution

The fourth proportional to 11,148.72, 15,385.71 and 6,671.61 is: 9,207.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.72 : 15,385.71 = 6,671.61 : x
  2. Step 2: Convert to fraction form
    11,148.72/15,385.71 = 6,671.61/x
  3. Step 3: Cross multiply
    11,148.72x = 15,385.71 × 6,671.61
  4. Step 4: Simplify right side
    11,148.72x = 102,647,346.41
  5. Step 5: Solve for x
    x = 102,647,346.41/11,148.72
  6. Step 6: Final answer
    x = 9,207.10

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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.