Home / 21,230.64-29,300.02-13,692.66

Finding the Fourth Proportional to 21,230.64, 29,300.02 and 13,692.66

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Solution

The fourth proportional to 21,230.64, 29,300.02 and 13,692.66 is: 18,896.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.64 : 29,300.02 = 13,692.66 : x
  2. Step 2: Convert to fraction form
    21,230.64/29,300.02 = 13,692.66/x
  3. Step 3: Cross multiply
    21,230.64x = 29,300.02 × 13,692.66
  4. Step 4: Simplify right side
    21,230.64x = 401,195,211.85
  5. Step 5: Solve for x
    x = 401,195,211.85/21,230.64
  6. Step 6: Final answer
    x = 18,896.99

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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.