Home / 13,217.20-18,238.83-7,247.63

Finding the Fourth Proportional to 13,217.20, 18,238.83 and 7,247.63

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Solution

The fourth proportional to 13,217.20, 18,238.83 and 7,247.63 is: 10,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.20 : 18,238.83 = 7,247.63 : x
  2. Step 2: Convert to fraction form
    13,217.20/18,238.83 = 7,247.63/x
  3. Step 3: Cross multiply
    13,217.20x = 18,238.83 × 7,247.63
  4. Step 4: Simplify right side
    13,217.20x = 132,188,291.47
  5. Step 5: Solve for x
    x = 132,188,291.47/13,217.20
  6. Step 6: Final answer
    x = 10,001.23

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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.