Home / 13,692.03-18,885.60-8,389.50

Finding the Fourth Proportional to 13,692.03, 18,885.60 and 8,389.50

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Solution

The fourth proportional to 13,692.03, 18,885.60 and 8,389.50 is: 11,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.03 : 18,885.60 = 8,389.50 : x
  2. Step 2: Convert to fraction form
    13,692.03/18,885.60 = 8,389.50/x
  3. Step 3: Cross multiply
    13,692.03x = 18,885.60 × 8,389.50
  4. Step 4: Simplify right side
    13,692.03x = 158,440,741.20
  5. Step 5: Solve for x
    x = 158,440,741.20/13,692.03
  6. Step 6: Final answer
    x = 11,571.75

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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.