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Finding the Fourth Proportional to 13,692.08, 18,898.00 and 8,653.09

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Solution

The fourth proportional to 13,692.08, 18,898.00 and 8,653.09 is: 11,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.08 : 18,898.00 = 8,653.09 : x
  2. Step 2: Convert to fraction form
    13,692.08/18,898.00 = 8,653.09/x
  3. Step 3: Cross multiply
    13,692.08x = 18,898.00 × 8,653.09
  4. Step 4: Simplify right side
    13,692.08x = 163,525,978.70
  5. Step 5: Solve for x
    x = 163,525,978.70/13,692.08
  6. Step 6: Final answer
    x = 11,943.11

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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.