Home / 13,221.30-18,245.58-7,252.86

Finding the Fourth Proportional to 13,221.30, 18,245.58 and 7,252.86

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Solution

The fourth proportional to 13,221.30, 18,245.58 and 7,252.86 is: 10,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.30 : 18,245.58 = 7,252.86 : x
  2. Step 2: Convert to fraction form
    13,221.30/18,245.58 = 7,252.86/x
  3. Step 3: Cross multiply
    13,221.30x = 18,245.58 × 7,252.86
  4. Step 4: Simplify right side
    13,221.30x = 132,332,637.36
  5. Step 5: Solve for x
    x = 132,332,637.36/13,221.30
  6. Step 6: Final answer
    x = 10,009.05

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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.