Home / 31,377.62-43,307.79-18,809.66

Finding the Fourth Proportional to 31,377.62, 43,307.79 and 18,809.66

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Solution

The fourth proportional to 31,377.62, 43,307.79 and 18,809.66 is: 25,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,377.62 : 43,307.79 = 18,809.66 : x
  2. Step 2: Convert to fraction form
    31,377.62/43,307.79 = 18,809.66/x
  3. Step 3: Cross multiply
    31,377.62x = 43,307.79 × 18,809.66
  4. Step 4: Simplify right side
    31,377.62x = 814,604,805.25
  5. Step 5: Solve for x
    x = 814,604,805.25/31,377.62
  6. Step 6: Final answer
    x = 25,961.33

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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.