Home / 13,212.14-18,232.75-7,243.68

Finding the Fourth Proportional to 13,212.14, 18,232.75 and 7,243.68

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Solution

The fourth proportional to 13,212.14, 18,232.75 and 7,243.68 is: 9,996.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.14 : 18,232.75 = 7,243.68 : x
  2. Step 2: Convert to fraction form
    13,212.14/18,232.75 = 7,243.68/x
  3. Step 3: Cross multiply
    13,212.14x = 18,232.75 × 7,243.68
  4. Step 4: Simplify right side
    13,212.14x = 132,072,206.52
  5. Step 5: Solve for x
    x = 132,072,206.52/13,212.14
  6. Step 6: Final answer
    x = 9,996.28

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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.