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Finding the Fourth Proportional to 14,984.80, 20,679.63 and 8,611.29

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Solution

The fourth proportional to 14,984.80, 20,679.63 and 8,611.29 is: 11,883.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,984.80 : 20,679.63 = 8,611.29 : x
  2. Step 2: Convert to fraction form
    14,984.80/20,679.63 = 8,611.29/x
  3. Step 3: Cross multiply
    14,984.80x = 20,679.63 × 8,611.29
  4. Step 4: Simplify right side
    14,984.80x = 178,078,224.79
  5. Step 5: Solve for x
    x = 178,078,224.79/14,984.80
  6. Step 6: Final answer
    x = 11,883.93

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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.