Home / 12,211.70-18,317.55-4,812.13

Finding the Fourth Proportional to 12,211.70, 18,317.55 and 4,812.13

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Solution

The fourth proportional to 12,211.70, 18,317.55 and 4,812.13 is: 7,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.70 : 18,317.55 = 4,812.13 : x
  2. Step 2: Convert to fraction form
    12,211.70/18,317.55 = 4,812.13/x
  3. Step 3: Cross multiply
    12,211.70x = 18,317.55 × 4,812.13
  4. Step 4: Simplify right side
    12,211.70x = 88,146,431.88
  5. Step 5: Solve for x
    x = 88,146,431.88/12,211.70
  6. Step 6: Final answer
    x = 7,218.20

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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.