Home / 13,208.46-18,228.14-7,240.12

Finding the Fourth Proportional to 13,208.46, 18,228.14 and 7,240.12

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Solution

The fourth proportional to 13,208.46, 18,228.14 and 7,240.12 is: 9,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.46 : 18,228.14 = 7,240.12 : x
  2. Step 2: Convert to fraction form
    13,208.46/18,228.14 = 7,240.12/x
  3. Step 3: Cross multiply
    13,208.46x = 18,228.14 × 7,240.12
  4. Step 4: Simplify right side
    13,208.46x = 131,973,884.78
  5. Step 5: Solve for x
    x = 131,973,884.78/13,208.46
  6. Step 6: Final answer
    x = 9,991.62

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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.