Home / 39,042.45-53,877.94-21,137.31

Finding the Fourth Proportional to 39,042.45, 53,877.94 and 21,137.31

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Solution

The fourth proportional to 39,042.45, 53,877.94 and 21,137.31 is: 29,169.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,042.45 : 53,877.94 = 21,137.31 : x
  2. Step 2: Convert to fraction form
    39,042.45/53,877.94 = 21,137.31/x
  3. Step 3: Cross multiply
    39,042.45x = 53,877.94 × 21,137.31
  4. Step 4: Simplify right side
    39,042.45x = 1,138,834,667.10
  5. Step 5: Solve for x
    x = 1,138,834,667.10/39,042.45
  6. Step 6: Final answer
    x = 29,169.14

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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.