Home / 39,874.63-55,026.29-21,969.48

Finding the Fourth Proportional to 39,874.63, 55,026.29 and 21,969.48

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Solution

The fourth proportional to 39,874.63, 55,026.29 and 21,969.48 is: 30,317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.63 : 55,026.29 = 21,969.48 : x
  2. Step 2: Convert to fraction form
    39,874.63/55,026.29 = 21,969.48/x
  3. Step 3: Cross multiply
    39,874.63x = 55,026.29 × 21,969.48
  4. Step 4: Simplify right side
    39,874.63x = 1,208,898,805.80
  5. Step 5: Solve for x
    x = 1,208,898,805.80/39,874.63
  6. Step 6: Final answer
    x = 30,317.49

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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.