Home / 13,146.48-18,146.16-8,112.24

Finding the Fourth Proportional to 13,146.48, 18,146.16 and 8,112.24

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Solution

The fourth proportional to 13,146.48, 18,146.16 and 8,112.24 is: 11,197.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.48 : 18,146.16 = 8,112.24 : x
  2. Step 2: Convert to fraction form
    13,146.48/18,146.16 = 8,112.24/x
  3. Step 3: Cross multiply
    13,146.48x = 18,146.16 × 8,112.24
  4. Step 4: Simplify right side
    13,146.48x = 147,206,005.00
  5. Step 5: Solve for x
    x = 147,206,005.00/13,146.48
  6. Step 6: Final answer
    x = 11,197.37

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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.