Home / 31,231.95-43,114.16-19,916.65

Finding the Fourth Proportional to 31,231.95, 43,114.16 and 19,916.65

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Solution

The fourth proportional to 31,231.95, 43,114.16 and 19,916.65 is: 27,493.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,231.95 : 43,114.16 = 19,916.65 : x
  2. Step 2: Convert to fraction form
    31,231.95/43,114.16 = 19,916.65/x
  3. Step 3: Cross multiply
    31,231.95x = 43,114.16 × 19,916.65
  4. Step 4: Simplify right side
    31,231.95x = 858,689,626.42
  5. Step 5: Solve for x
    x = 858,689,626.42/31,231.95
  6. Step 6: Final answer
    x = 27,493.95

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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.