Home / 31,231.96-43,114.18-19,916.64

Finding the Fourth Proportional to 31,231.96, 43,114.18 and 19,916.64

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Solution

The fourth proportional to 31,231.96, 43,114.18 and 19,916.64 is: 27,493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,231.96 : 43,114.18 = 19,916.64 : x
  2. Step 2: Convert to fraction form
    31,231.96/43,114.18 = 19,916.64/x
  3. Step 3: Cross multiply
    31,231.96x = 43,114.18 × 19,916.64
  4. Step 4: Simplify right side
    31,231.96x = 858,689,601.96
  5. Step 5: Solve for x
    x = 858,689,601.96/31,231.96
  6. Step 6: Final answer
    x = 27,493.94

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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.