Home / 31,887.74-43,986.75-19,930.32

Finding the Fourth Proportional to 31,887.74, 43,986.75 and 19,930.32

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Solution

The fourth proportional to 31,887.74, 43,986.75 and 19,930.32 is: 27,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,887.74 : 43,986.75 = 19,930.32 : x
  2. Step 2: Convert to fraction form
    31,887.74/43,986.75 = 19,930.32/x
  3. Step 3: Cross multiply
    31,887.74x = 43,986.75 × 19,930.32
  4. Step 4: Simplify right side
    31,887.74x = 876,670,003.26
  5. Step 5: Solve for x
    x = 876,670,003.26/31,887.74
  6. Step 6: Final answer
    x = 27,492.39

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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.