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Finding the Fourth Proportional to 21,692.53, 29,934.93 and 12,260.89

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Solution

The fourth proportional to 21,692.53, 29,934.93 and 12,260.89 is: 16,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,692.53 : 29,934.93 = 12,260.89 : x
  2. Step 2: Convert to fraction form
    21,692.53/29,934.93 = 12,260.89/x
  3. Step 3: Cross multiply
    21,692.53x = 29,934.93 × 12,260.89
  4. Step 4: Simplify right side
    21,692.53x = 367,028,883.89
  5. Step 5: Solve for x
    x = 367,028,883.89/21,692.53
  6. Step 6: Final answer
    x = 16,919.60

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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.