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Finding the Fourth Proportional to 19,692.53, 29,469.45 and 12,300.47

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Solution

The fourth proportional to 19,692.53, 29,469.45 and 12,300.47 is: 18,407.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.53 : 29,469.45 = 12,300.47 : x
  2. Step 2: Convert to fraction form
    19,692.53/29,469.45 = 12,300.47/x
  3. Step 3: Cross multiply
    19,692.53x = 29,469.45 × 12,300.47
  4. Step 4: Simplify right side
    19,692.53x = 362,488,085.64
  5. Step 5: Solve for x
    x = 362,488,085.64/19,692.53
  6. Step 6: Final answer
    x = 18,407.39

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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.