Home / 13,239.12-18,269.88-7,270.88

Finding the Fourth Proportional to 13,239.12, 18,269.88 and 7,270.88

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Solution

The fourth proportional to 13,239.12, 18,269.88 and 7,270.88 is: 10,033.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.12 : 18,269.88 = 7,270.88 : x
  2. Step 2: Convert to fraction form
    13,239.12/18,269.88 = 7,270.88/x
  3. Step 3: Cross multiply
    13,239.12x = 18,269.88 × 7,270.88
  4. Step 4: Simplify right side
    13,239.12x = 132,838,105.09
  5. Step 5: Solve for x
    x = 132,838,105.09/13,239.12
  6. Step 6: Final answer
    x = 10,033.76

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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.