Home / 11,175.15-15,440.37-9,308.91

Finding the Fourth Proportional to 11,175.15, 15,440.37 and 9,308.91

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Solution

The fourth proportional to 11,175.15, 15,440.37 and 9,308.91 is: 12,861.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.15 : 15,440.37 = 9,308.91 : x
  2. Step 2: Convert to fraction form
    11,175.15/15,440.37 = 9,308.91/x
  3. Step 3: Cross multiply
    11,175.15x = 15,440.37 × 9,308.91
  4. Step 4: Simplify right side
    11,175.15x = 143,733,014.70
  5. Step 5: Solve for x
    x = 143,733,014.70/11,175.15
  6. Step 6: Final answer
    x = 12,861.84

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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.