Home / 13,692.28-18,895.38-7,723.72

Finding the Fourth Proportional to 13,692.28, 18,895.38 and 7,723.72

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Solution

The fourth proportional to 13,692.28, 18,895.38 and 7,723.72 is: 10,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.28 : 18,895.38 = 7,723.72 : x
  2. Step 2: Convert to fraction form
    13,692.28/18,895.38 = 7,723.72/x
  3. Step 3: Cross multiply
    13,692.28x = 18,895.38 × 7,723.72
  4. Step 4: Simplify right side
    13,692.28x = 145,942,624.41
  5. Step 5: Solve for x
    x = 145,942,624.41/13,692.28
  6. Step 6: Final answer
    x = 10,658.75

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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.