Home / 13,200.81-18,217.11-7,232.69

Finding the Fourth Proportional to 13,200.81, 18,217.11 and 7,232.69

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Solution

The fourth proportional to 13,200.81, 18,217.11 and 7,232.69 is: 9,981.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.81 : 18,217.11 = 7,232.69 : x
  2. Step 2: Convert to fraction form
    13,200.81/18,217.11 = 7,232.69/x
  3. Step 3: Cross multiply
    13,200.81x = 18,217.11 × 7,232.69
  4. Step 4: Simplify right side
    13,200.81x = 131,758,709.33
  5. Step 5: Solve for x
    x = 131,758,709.33/13,200.81
  6. Step 6: Final answer
    x = 9,981.11

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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.