Home / 31,613.53-43,635.36-19,669.74

Finding the Fourth Proportional to 31,613.53, 43,635.36 and 19,669.74

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Solution

The fourth proportional to 31,613.53, 43,635.36 and 19,669.74 is: 27,149.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,613.53 : 43,635.36 = 19,669.74 : x
  2. Step 2: Convert to fraction form
    31,613.53/43,635.36 = 19,669.74/x
  3. Step 3: Cross multiply
    31,613.53x = 43,635.36 × 19,669.74
  4. Step 4: Simplify right side
    31,613.53x = 858,296,186.01
  5. Step 5: Solve for x
    x = 858,296,186.01/31,613.53
  6. Step 6: Final answer
    x = 27,149.65

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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.