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Finding the Fourth Proportional to 13,295.54, 18,349.08 and 7,990.22

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Solution

The fourth proportional to 13,295.54, 18,349.08 and 7,990.22 is: 11,027.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,295.54 : 18,349.08 = 7,990.22 : x
  2. Step 2: Convert to fraction form
    13,295.54/18,349.08 = 7,990.22/x
  3. Step 3: Cross multiply
    13,295.54x = 18,349.08 × 7,990.22
  4. Step 4: Simplify right side
    13,295.54x = 146,613,186.00
  5. Step 5: Solve for x
    x = 146,613,186.00/13,295.54
  6. Step 6: Final answer
    x = 11,027.25

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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.