Home / 31,454.64-43,407.42-18,879.39

Finding the Fourth Proportional to 31,454.64, 43,407.42 and 18,879.39

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Solution

The fourth proportional to 31,454.64, 43,407.42 and 18,879.39 is: 26,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,454.64 : 43,407.42 = 18,879.39 : x
  2. Step 2: Convert to fraction form
    31,454.64/43,407.42 = 18,879.39/x
  3. Step 3: Cross multiply
    31,454.64x = 43,407.42 × 18,879.39
  4. Step 4: Simplify right side
    31,454.64x = 819,505,611.07
  5. Step 5: Solve for x
    x = 819,505,611.07/31,454.64
  6. Step 6: Final answer
    x = 26,053.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.