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Finding the Fourth Proportional to 38,986.03, 53,801.03 and 21,523.90

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Solution

The fourth proportional to 38,986.03, 53,801.03 and 21,523.90 is: 29,703.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986.03 : 53,801.03 = 21,523.90 : x
  2. Step 2: Convert to fraction form
    38,986.03/53,801.03 = 21,523.90/x
  3. Step 3: Cross multiply
    38,986.03x = 53,801.03 × 21,523.90
  4. Step 4: Simplify right side
    38,986.03x = 1,158,007,612.99
  5. Step 5: Solve for x
    x = 1,158,007,612.99/38,986.03
  6. Step 6: Final answer
    x = 29,703.14

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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.