Home / 31,763.68-43,830.30-19,658.64

Finding the Fourth Proportional to 31,763.68, 43,830.30 and 19,658.64

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Solution

The fourth proportional to 31,763.68, 43,830.30 and 19,658.64 is: 27,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,763.68 : 43,830.30 = 19,658.64 : x
  2. Step 2: Convert to fraction form
    31,763.68/43,830.30 = 19,658.64/x
  3. Step 3: Cross multiply
    31,763.68x = 43,830.30 × 19,658.64
  4. Step 4: Simplify right side
    31,763.68x = 861,644,088.79
  5. Step 5: Solve for x
    x = 861,644,088.79/31,763.68
  6. Step 6: Final answer
    x = 27,126.71

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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.