Home / 13,185.45-18,195.35-7,217.24

Finding the Fourth Proportional to 13,185.45, 18,195.35 and 7,217.24

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Solution

The fourth proportional to 13,185.45, 18,195.35 and 7,217.24 is: 9,959.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.45 : 18,195.35 = 7,217.24 : x
  2. Step 2: Convert to fraction form
    13,185.45/18,195.35 = 7,217.24/x
  3. Step 3: Cross multiply
    13,185.45x = 18,195.35 × 7,217.24
  4. Step 4: Simplify right side
    13,185.45x = 131,320,080.77
  5. Step 5: Solve for x
    x = 131,320,080.77/13,185.45
  6. Step 6: Final answer
    x = 9,959.47

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Half scale
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Double scale
Find fourth proportional to 13,186.45, 18,196.72 and 7,218.24
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.