Home / 12,172.70-18,258.92-6,624.79

Finding the Fourth Proportional to 12,172.70, 18,258.92 and 6,624.79

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Solution

The fourth proportional to 12,172.70, 18,258.92 and 6,624.79 is: 9,937.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.70 : 18,258.92 = 6,624.79 : x
  2. Step 2: Convert to fraction form
    12,172.70/18,258.92 = 6,624.79/x
  3. Step 3: Cross multiply
    12,172.70x = 18,258.92 × 6,624.79
  4. Step 4: Simplify right side
    12,172.70x = 120,961,431.86
  5. Step 5: Solve for x
    x = 120,961,431.86/12,172.70
  6. Step 6: Final answer
    x = 9,937.11

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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.