Home / 13,204.08-18,221.69-7,235.80

Finding the Fourth Proportional to 13,204.08, 18,221.69 and 7,235.80

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Solution

The fourth proportional to 13,204.08, 18,221.69 and 7,235.80 is: 9,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.08 : 18,221.69 = 7,235.80 : x
  2. Step 2: Convert to fraction form
    13,204.08/18,221.69 = 7,235.80/x
  3. Step 3: Cross multiply
    13,204.08x = 18,221.69 × 7,235.80
  4. Step 4: Simplify right side
    13,204.08x = 131,848,477.04
  5. Step 5: Solve for x
    x = 131,848,477.04/13,204.08
  6. Step 6: Final answer
    x = 9,985.43

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Half scale
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Double scale
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Similar ratio
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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.