Home / 13,186.08-18,196.90-7,217.84

Finding the Fourth Proportional to 13,186.08, 18,196.90 and 7,217.84

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Solution

The fourth proportional to 13,186.08, 18,196.90 and 7,217.84 is: 9,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.08 : 18,196.90 = 7,217.84 : x
  2. Step 2: Convert to fraction form
    13,186.08/18,196.90 = 7,217.84/x
  3. Step 3: Cross multiply
    13,186.08x = 18,196.90 × 7,217.84
  4. Step 4: Simplify right side
    13,186.08x = 131,342,312.70
  5. Step 5: Solve for x
    x = 131,342,312.70/13,186.08
  6. Step 6: Final answer
    x = 9,960.68

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Half scale
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Double scale
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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.