Home / 13,205.36-18,223.22-7,236.68

Finding the Fourth Proportional to 13,205.36, 18,223.22 and 7,236.68

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Solution

The fourth proportional to 13,205.36, 18,223.22 and 7,236.68 is: 9,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.36 : 18,223.22 = 7,236.68 : x
  2. Step 2: Convert to fraction form
    13,205.36/18,223.22 = 7,236.68/x
  3. Step 3: Cross multiply
    13,205.36x = 18,223.22 × 7,236.68
  4. Step 4: Simplify right side
    13,205.36x = 131,875,611.71
  5. Step 5: Solve for x
    x = 131,875,611.71/13,205.36
  6. Step 6: Final answer
    x = 9,986.52

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Half scale
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Double 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.