Home / 31,019.72-46,511.90-21,170.92

Finding the Fourth Proportional to 31,019.72, 46,511.90 and 21,170.92

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Solution

The fourth proportional to 31,019.72, 46,511.90 and 21,170.92 is: 31,744.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,019.72 : 46,511.90 = 21,170.92 : x
  2. Step 2: Convert to fraction form
    31,019.72/46,511.90 = 21,170.92/x
  3. Step 3: Cross multiply
    31,019.72x = 46,511.90 × 21,170.92
  4. Step 4: Simplify right side
    31,019.72x = 984,699,713.95
  5. Step 5: Solve for x
    x = 984,699,713.95/31,019.72
  6. Step 6: Final answer
    x = 31,744.31

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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.