Home / 12,431.70-18,647.53-3,672.76

Finding the Fourth Proportional to 12,431.70, 18,647.53 and 3,672.76

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Solution

The fourth proportional to 12,431.70, 18,647.53 and 3,672.76 is: 5,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.70 : 18,647.53 = 3,672.76 : x
  2. Step 2: Convert to fraction form
    12,431.70/18,647.53 = 3,672.76/x
  3. Step 3: Cross multiply
    12,431.70x = 18,647.53 × 3,672.76
  4. Step 4: Simplify right side
    12,431.70x = 68,487,902.28
  5. Step 5: Solve for x
    x = 68,487,902.28/12,431.70
  6. Step 6: Final answer
    x = 5,509.13

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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.