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Finding the Fourth Proportional to 19,692.19, 29,512.77 and 7,999.03

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Solution

The fourth proportional to 19,692.19, 29,512.77 and 7,999.03 is: 11,988.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.19 : 29,512.77 = 7,999.03 : x
  2. Step 2: Convert to fraction form
    19,692.19/29,512.77 = 7,999.03/x
  3. Step 3: Cross multiply
    19,692.19x = 29,512.77 × 7,999.03
  4. Step 4: Simplify right side
    19,692.19x = 236,073,532.61
  5. Step 5: Solve for x
    x = 236,073,532.61/19,692.19
  6. Step 6: Final answer
    x = 11,988.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.