Home / 13,212.80-18,233.78-7,244.58

Finding the Fourth Proportional to 13,212.80, 18,233.78 and 7,244.58

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Solution

The fourth proportional to 13,212.80, 18,233.78 and 7,244.58 is: 9,997.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.80 : 18,233.78 = 7,244.58 : x
  2. Step 2: Convert to fraction form
    13,212.80/18,233.78 = 7,244.58/x
  3. Step 3: Cross multiply
    13,212.80x = 18,233.78 × 7,244.58
  4. Step 4: Simplify right side
    13,212.80x = 132,096,077.91
  5. Step 5: Solve for x
    x = 132,096,077.91/13,212.80
  6. Step 6: Final answer
    x = 9,997.58

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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.