Home / 13,212.30-18,232.59-7,243.86

Finding the Fourth Proportional to 13,212.30, 18,232.59 and 7,243.86

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Solution

The fourth proportional to 13,212.30, 18,232.59 and 7,243.86 is: 9,996.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.30 : 18,232.59 = 7,243.86 : x
  2. Step 2: Convert to fraction form
    13,212.30/18,232.59 = 7,243.86/x
  3. Step 3: Cross multiply
    13,212.30x = 18,232.59 × 7,243.86
  4. Step 4: Simplify right side
    13,212.30x = 132,074,329.40
  5. Step 5: Solve for x
    x = 132,074,329.40/13,212.30
  6. Step 6: Final answer
    x = 9,996.32

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Half scale
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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.