Home / 30,711.34-46,011.12-21,331.54

Finding the Fourth Proportional to 30,711.34, 46,011.12 and 21,331.54

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Solution

The fourth proportional to 30,711.34, 46,011.12 and 21,331.54 is: 31,958.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,711.34 : 46,011.12 = 21,331.54 : x
  2. Step 2: Convert to fraction form
    30,711.34/46,011.12 = 21,331.54/x
  3. Step 3: Cross multiply
    30,711.34x = 46,011.12 × 21,331.54
  4. Step 4: Simplify right side
    30,711.34x = 981,488,046.72
  5. Step 5: Solve for x
    x = 981,488,046.72/30,711.34
  6. Step 6: Final answer
    x = 31,958.49

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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.