Home / 13,206.34-18,224.78-7,238.23

Finding the Fourth Proportional to 13,206.34, 18,224.78 and 7,238.23

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Solution

The fourth proportional to 13,206.34, 18,224.78 and 7,238.23 is: 9,988.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.34 : 18,224.78 = 7,238.23 : x
  2. Step 2: Convert to fraction form
    13,206.34/18,224.78 = 7,238.23/x
  3. Step 3: Cross multiply
    13,206.34x = 18,224.78 × 7,238.23
  4. Step 4: Simplify right side
    13,206.34x = 131,915,149.34
  5. Step 5: Solve for x
    x = 131,915,149.34/13,206.34
  6. Step 6: Final answer
    x = 9,988.77

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Half scale
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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.