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Finding the Fourth Proportional to 16,692.78, 23,028.21 and 9,615.09

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Solution

The fourth proportional to 16,692.78, 23,028.21 and 9,615.09 is: 13,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,692.78 : 23,028.21 = 9,615.09 : x
  2. Step 2: Convert to fraction form
    16,692.78/23,028.21 = 9,615.09/x
  3. Step 3: Cross multiply
    16,692.78x = 23,028.21 × 9,615.09
  4. Step 4: Simplify right side
    16,692.78x = 221,418,311.69
  5. Step 5: Solve for x
    x = 221,418,311.69/16,692.78
  6. Step 6: Final answer
    x = 13,264.32

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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.