Home / 13,528.31-18,692.97-11,721.98

Finding the Fourth Proportional to 13,528.31, 18,692.97 and 11,721.98

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Solution

The fourth proportional to 13,528.31, 18,692.97 and 11,721.98 is: 16,197.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.31 : 18,692.97 = 11,721.98 : x
  2. Step 2: Convert to fraction form
    13,528.31/18,692.97 = 11,721.98/x
  3. Step 3: Cross multiply
    13,528.31x = 18,692.97 × 11,721.98
  4. Step 4: Simplify right side
    13,528.31x = 219,118,527.02
  5. Step 5: Solve for x
    x = 219,118,527.02/13,528.31
  6. Step 6: Final answer
    x = 16,197.04

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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.