Home / 30,939.84-46,344.96-19,789.79

Finding the Fourth Proportional to 30,939.84, 46,344.96 and 19,789.79

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Solution

The fourth proportional to 30,939.84, 46,344.96 and 19,789.79 is: 29,643.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.84 : 46,344.96 = 19,789.79 : x
  2. Step 2: Convert to fraction form
    30,939.84/46,344.96 = 19,789.79/x
  3. Step 3: Cross multiply
    30,939.84x = 46,344.96 × 19,789.79
  4. Step 4: Simplify right side
    30,939.84x = 917,156,794.23
  5. Step 5: Solve for x
    x = 917,156,794.23/30,939.84
  6. Step 6: Final answer
    x = 29,643.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.