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Finding the Fourth Proportional to 14,995.23, 20,692.21 and 8,621.49

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Solution

The fourth proportional to 14,995.23, 20,692.21 and 8,621.49 is: 11,896.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,995.23 : 20,692.21 = 8,621.49 : x
  2. Step 2: Convert to fraction form
    14,995.23/20,692.21 = 8,621.49/x
  3. Step 3: Cross multiply
    14,995.23x = 20,692.21 × 8,621.49
  4. Step 4: Simplify right side
    14,995.23x = 178,397,637.41
  5. Step 5: Solve for x
    x = 178,397,637.41/14,995.23
  6. Step 6: Final answer
    x = 11,896.96

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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.