Home / 13,180.76-18,189.50-7,212.48

Finding the Fourth Proportional to 13,180.76, 18,189.50 and 7,212.48

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Solution

The fourth proportional to 13,180.76, 18,189.50 and 7,212.48 is: 9,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.76 : 18,189.50 = 7,212.48 : x
  2. Step 2: Convert to fraction form
    13,180.76/18,189.50 = 7,212.48/x
  3. Step 3: Cross multiply
    13,180.76x = 18,189.50 × 7,212.48
  4. Step 4: Simplify right side
    13,180.76x = 131,191,404.96
  5. Step 5: Solve for x
    x = 131,191,404.96/13,180.76
  6. Step 6: Final answer
    x = 9,953.25

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Half scale
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Double scale
Find fourth proportional to 13,181.76, 18,190.88 and 7,213.48
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.