Home / 14,115.60-21,173.40-8,186.40

Finding the Fourth Proportional to 14,115.60, 21,173.40 and 8,186.40

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Solution

The fourth proportional to 14,115.60, 21,173.40 and 8,186.40 is: 12,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.60 : 21,173.40 = 8,186.40 : x
  2. Step 2: Convert to fraction form
    14,115.60/21,173.40 = 8,186.40/x
  3. Step 3: Cross multiply
    14,115.60x = 21,173.40 × 8,186.40
  4. Step 4: Simplify right side
    14,115.60x = 173,333,921.76
  5. Step 5: Solve for x
    x = 173,333,921.76/14,115.60
  6. Step 6: Final answer
    x = 12,279.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.