Home / 13,692.31-20,539.21-4,331.63

Finding the Fourth Proportional to 13,692.31, 20,539.21 and 4,331.63

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Solution

The fourth proportional to 13,692.31, 20,539.21 and 4,331.63 is: 6,497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.31 : 20,539.21 = 4,331.63 : x
  2. Step 2: Convert to fraction form
    13,692.31/20,539.21 = 4,331.63/x
  3. Step 3: Cross multiply
    13,692.31x = 20,539.21 × 4,331.63
  4. Step 4: Simplify right side
    13,692.31x = 88,968,236.55
  5. Step 5: Solve for x
    x = 88,968,236.55/13,692.31
  6. Step 6: Final answer
    x = 6,497.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.