Home / 13,207.84-18,228.69-8,173.68

Finding the Fourth Proportional to 13,207.84, 18,228.69 and 8,173.68

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Solution

The fourth proportional to 13,207.84, 18,228.69 and 8,173.68 is: 11,280.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.84 : 18,228.69 = 8,173.68 : x
  2. Step 2: Convert to fraction form
    13,207.84/18,228.69 = 8,173.68/x
  3. Step 3: Cross multiply
    13,207.84x = 18,228.69 × 8,173.68
  4. Step 4: Simplify right side
    13,207.84x = 148,995,504.02
  5. Step 5: Solve for x
    x = 148,995,504.02/13,207.84
  6. Step 6: Final answer
    x = 11,280.84

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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.