Home / 13,217.25-18,238.13-7,247.35

Finding the Fourth Proportional to 13,217.25, 18,238.13 and 7,247.35

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Solution

The fourth proportional to 13,217.25, 18,238.13 and 7,247.35 is: 10,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.25 : 18,238.13 = 7,247.35 : x
  2. Step 2: Convert to fraction form
    13,217.25/18,238.13 = 7,247.35/x
  3. Step 3: Cross multiply
    13,217.25x = 18,238.13 × 7,247.35
  4. Step 4: Simplify right side
    13,217.25x = 132,178,029.62
  5. Step 5: Solve for x
    x = 132,178,029.62/13,217.25
  6. Step 6: Final answer
    x = 10,000.42

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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.