Home / 31,560.10-43,555.07-18,136.71

Finding the Fourth Proportional to 31,560.10, 43,555.07 and 18,136.71

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Solution

The fourth proportional to 31,560.10, 43,555.07 and 18,136.71 is: 25,029.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,560.10 : 43,555.07 = 18,136.71 : x
  2. Step 2: Convert to fraction form
    31,560.10/43,555.07 = 18,136.71/x
  3. Step 3: Cross multiply
    31,560.10x = 43,555.07 × 18,136.71
  4. Step 4: Simplify right side
    31,560.10x = 789,945,616.94
  5. Step 5: Solve for x
    x = 789,945,616.94/31,560.10
  6. Step 6: Final answer
    x = 25,029.89

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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.