Home / 13,203.96-18,221.48-7,900.04

Finding the Fourth Proportional to 13,203.96, 18,221.48 and 7,900.04

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Solution

The fourth proportional to 13,203.96, 18,221.48 and 7,900.04 is: 10,902.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.96 : 18,221.48 = 7,900.04 : x
  2. Step 2: Convert to fraction form
    13,203.96/18,221.48 = 7,900.04/x
  3. Step 3: Cross multiply
    13,203.96x = 18,221.48 × 7,900.04
  4. Step 4: Simplify right side
    13,203.96x = 143,950,290.25
  5. Step 5: Solve for x
    x = 143,950,290.25/13,203.96
  6. Step 6: Final answer
    x = 10,902.05

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Half scale
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Double scale
Find fourth proportional to 13,204.96, 18,222.86 and 7,901.04
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.