Home / 31,185.80-46,781.10-10,409.32

Finding the Fourth Proportional to 31,185.80, 46,781.10 and 10,409.32

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Solution

The fourth proportional to 31,185.80, 46,781.10 and 10,409.32 is: 15,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,185.80 : 46,781.10 = 10,409.32 : x
  2. Step 2: Convert to fraction form
    31,185.80/46,781.10 = 10,409.32/x
  3. Step 3: Cross multiply
    31,185.80x = 46,781.10 × 10,409.32
  4. Step 4: Simplify right side
    31,185.80x = 486,959,439.85
  5. Step 5: Solve for x
    x = 486,959,439.85/31,185.80
  6. Step 6: Final answer
    x = 15,614.78

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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.