Home / 13,163.12-18,166.32-7,498.12

Finding the Fourth Proportional to 13,163.12, 18,166.32 and 7,498.12

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Solution

The fourth proportional to 13,163.12, 18,166.32 and 7,498.12 is: 10,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.12 : 18,166.32 = 7,498.12 : x
  2. Step 2: Convert to fraction form
    13,163.12/18,166.32 = 7,498.12/x
  3. Step 3: Cross multiply
    13,163.12x = 18,166.32 × 7,498.12
  4. Step 4: Simplify right side
    13,163.12x = 136,213,247.32
  5. Step 5: Solve for x
    x = 136,213,247.32/13,163.12
  6. Step 6: Final answer
    x = 10,348.10

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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.