Home / 13,217.25-18,238.13-7,247.36

Finding the Fourth Proportional to 13,217.25, 18,238.13 and 7,247.36

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Solution

The fourth proportional to 13,217.25, 18,238.13 and 7,247.36 is: 10,000.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.25 : 18,238.13 = 7,247.36 : x
  2. Step 2: Convert to fraction form
    13,217.25/18,238.13 = 7,247.36/x
  3. Step 3: Cross multiply
    13,217.25x = 18,238.13 × 7,247.36
  4. Step 4: Simplify right side
    13,217.25x = 132,178,166.41
  5. Step 5: Solve for x
    x = 132,178,166.41/13,217.25
  6. Step 6: Final answer
    x = 10,000.43

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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.