Home / 11,307.96-15,588.85-8,120.24

Finding the Fourth Proportional to 11,307.96, 15,588.85 and 8,120.24

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Solution

The fourth proportional to 11,307.96, 15,588.85 and 8,120.24 is: 11,194.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,307.96 : 15,588.85 = 8,120.24 : x
  2. Step 2: Convert to fraction form
    11,307.96/15,588.85 = 8,120.24/x
  3. Step 3: Cross multiply
    11,307.96x = 15,588.85 × 8,120.24
  4. Step 4: Simplify right side
    11,307.96x = 126,585,203.32
  5. Step 5: Solve for x
    x = 126,585,203.32/11,307.96
  6. Step 6: Final answer
    x = 11,194.34

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Half scale
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Double scale
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Similar ratio
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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.