Home / 31,678.85-43,716.86-17,531.69

Finding the Fourth Proportional to 31,678.85, 43,716.86 and 17,531.69

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Solution

The fourth proportional to 31,678.85, 43,716.86 and 17,531.69 is: 24,193.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.85 : 43,716.86 = 17,531.69 : x
  2. Step 2: Convert to fraction form
    31,678.85/43,716.86 = 17,531.69/x
  3. Step 3: Cross multiply
    31,678.85x = 43,716.86 × 17,531.69
  4. Step 4: Simplify right side
    31,678.85x = 766,430,131.05
  5. Step 5: Solve for x
    x = 766,430,131.05/31,678.85
  6. Step 6: Final answer
    x = 24,193.75

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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.