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Finding the Fourth Proportional to 13,692.54, 18,904.95 and 8,984.82

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Solution

The fourth proportional to 13,692.54, 18,904.95 and 8,984.82 is: 12,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.54 : 18,904.95 = 8,984.82 : x
  2. Step 2: Convert to fraction form
    13,692.54/18,904.95 = 8,984.82/x
  3. Step 3: Cross multiply
    13,692.54x = 18,904.95 × 8,984.82
  4. Step 4: Simplify right side
    13,692.54x = 169,857,572.86
  5. Step 5: Solve for x
    x = 169,857,572.86/13,692.54
  6. Step 6: Final answer
    x = 12,405.12

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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.