Home / 13,206.30-18,224.61-7,238.34

Finding the Fourth Proportional to 13,206.30, 18,224.61 and 7,238.34

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Solution

The fourth proportional to 13,206.30, 18,224.61 and 7,238.34 is: 9,988.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.30 : 18,224.61 = 7,238.34 : x
  2. Step 2: Convert to fraction form
    13,206.30/18,224.61 = 7,238.34/x
  3. Step 3: Cross multiply
    13,206.30x = 18,224.61 × 7,238.34
  4. Step 4: Simplify right side
    13,206.30x = 131,915,923.55
  5. Step 5: Solve for x
    x = 131,915,923.55/13,206.30
  6. Step 6: Final answer
    x = 9,988.86

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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.