Home / 35,938.80-49,587-21,791.28

Finding the Fourth Proportional to 35,938.80, 49,587 and 21,791.28

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Solution

The fourth proportional to 35,938.80, 49,587 and 21,791.28 is: 30,066.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,938.80 : 49,587 = 21,791.28 : x
  2. Step 2: Convert to fraction form
    35,938.80/49,587 = 21,791.28/x
  3. Step 3: Cross multiply
    35,938.80x = 49,587 × 21,791.28
  4. Step 4: Simplify right side
    35,938.80x = 1,080,564,201.36
  5. Step 5: Solve for x
    x = 1,080,564,201.36/35,938.80
  6. Step 6: Final answer
    x = 30,066.79

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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.