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Finding the Fourth Proportional to 18,763.60, 25,890.60 and 11,692.24

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Solution

The fourth proportional to 18,763.60, 25,890.60 and 11,692.24 is: 16,133.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.60 : 25,890.60 = 11,692.24 : x
  2. Step 2: Convert to fraction form
    18,763.60/25,890.60 = 11,692.24/x
  3. Step 3: Cross multiply
    18,763.60x = 25,890.60 × 11,692.24
  4. Step 4: Simplify right side
    18,763.60x = 302,719,108.94
  5. Step 5: Solve for x
    x = 302,719,108.94/18,763.60
  6. Step 6: Final answer
    x = 16,133.32

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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.