Home / 13,186.16-18,196.48-7,217.68

Finding the Fourth Proportional to 13,186.16, 18,196.48 and 7,217.68

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Solution

The fourth proportional to 13,186.16, 18,196.48 and 7,217.68 is: 9,960.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.16 : 18,196.48 = 7,217.68 : x
  2. Step 2: Convert to fraction form
    13,186.16/18,196.48 = 7,217.68/x
  3. Step 3: Cross multiply
    13,186.16x = 18,196.48 × 7,217.68
  4. Step 4: Simplify right side
    13,186.16x = 131,336,369.77
  5. Step 5: Solve for x
    x = 131,336,369.77/13,186.16
  6. Step 6: Final answer
    x = 9,960.17

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Half scale
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Double scale
Find fourth proportional to 13,187.16, 18,197.86 and 7,218.68
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.