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Finding the Fourth Proportional to 15,692.69, 21,650.61 and 8,973.53

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Solution

The fourth proportional to 15,692.69, 21,650.61 and 8,973.53 is: 12,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,692.69 : 21,650.61 = 8,973.53 : x
  2. Step 2: Convert to fraction form
    15,692.69/21,650.61 = 8,973.53/x
  3. Step 3: Cross multiply
    15,692.69x = 21,650.61 × 8,973.53
  4. Step 4: Simplify right side
    15,692.69x = 194,282,398.35
  5. Step 5: Solve for x
    x = 194,282,398.35/15,692.69
  6. Step 6: Final answer
    x = 12,380.44

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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.