Home / 30,997.80-46,517.76-20,445.12

Finding the Fourth Proportional to 30,997.80, 46,517.76 and 20,445.12

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Solution

The fourth proportional to 30,997.80, 46,517.76 and 20,445.12 is: 30,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,997.80 : 46,517.76 = 20,445.12 : x
  2. Step 2: Convert to fraction form
    30,997.80/46,517.76 = 20,445.12/x
  3. Step 3: Cross multiply
    30,997.80x = 46,517.76 × 20,445.12
  4. Step 4: Simplify right side
    30,997.80x = 951,061,185.33
  5. Step 5: Solve for x
    x = 951,061,185.33/30,997.80
  6. Step 6: Final answer
    x = 30,681.57

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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.