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Finding the Fourth Proportional to 14,692.92, 20,276.01 and 7,978.74

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Solution

The fourth proportional to 14,692.92, 20,276.01 and 7,978.74 is: 11,010.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,692.92 : 20,276.01 = 7,978.74 : x
  2. Step 2: Convert to fraction form
    14,692.92/20,276.01 = 7,978.74/x
  3. Step 3: Cross multiply
    14,692.92x = 20,276.01 × 7,978.74
  4. Step 4: Simplify right side
    14,692.92x = 161,777,012.03
  5. Step 5: Solve for x
    x = 161,777,012.03/14,692.92
  6. Step 6: Final answer
    x = 11,010.54

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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.