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Finding the Fourth Proportional to 26,692.13, 36,792.72 and 21,017.88

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Solution

The fourth proportional to 26,692.13, 36,792.72 and 21,017.88 is: 28,971.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,692.13 : 36,792.72 = 21,017.88 : x
  2. Step 2: Convert to fraction form
    26,692.13/36,792.72 = 21,017.88/x
  3. Step 3: Cross multiply
    26,692.13x = 36,792.72 × 21,017.88
  4. Step 4: Simplify right side
    26,692.13x = 773,304,973.83
  5. Step 5: Solve for x
    x = 773,304,973.83/26,692.13
  6. Step 6: Final answer
    x = 28,971.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.