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Finding the Fourth Proportional to 39,604.71, 54,654.03 and 21,699.66

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Solution

The fourth proportional to 39,604.71, 54,654.03 and 21,699.66 is: 29,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,604.71 : 54,654.03 = 21,699.66 : x
  2. Step 2: Convert to fraction form
    39,604.71/54,654.03 = 21,699.66/x
  3. Step 3: Cross multiply
    39,604.71x = 54,654.03 × 21,699.66
  4. Step 4: Simplify right side
    39,604.71x = 1,185,973,868.63
  5. Step 5: Solve for x
    x = 1,185,973,868.63/39,604.71
  6. Step 6: Final answer
    x = 29,945.27

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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.