Home / 31,218.12-46,734.90-20,091.96

Finding the Fourth Proportional to 31,218.12, 46,734.90 and 20,091.96

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Solution

The fourth proportional to 31,218.12, 46,734.90 and 20,091.96 is: 30,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,218.12 : 46,734.90 = 20,091.96 : x
  2. Step 2: Convert to fraction form
    31,218.12/46,734.90 = 20,091.96/x
  3. Step 3: Cross multiply
    31,218.12x = 46,734.90 × 20,091.96
  4. Step 4: Simplify right side
    31,218.12x = 938,995,741.40
  5. Step 5: Solve for x
    x = 938,995,741.40/31,218.12
  6. Step 6: Final answer
    x = 30,078.55

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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.