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Finding the Fourth Proportional to 14,989.35, 20,685.98 and 8,618.00

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Solution

The fourth proportional to 14,989.35, 20,685.98 and 8,618.00 is: 11,893.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,989.35 : 20,685.98 = 8,618.00 : x
  2. Step 2: Convert to fraction form
    14,989.35/20,685.98 = 8,618.00/x
  3. Step 3: Cross multiply
    14,989.35x = 20,685.98 × 8,618.00
  4. Step 4: Simplify right side
    14,989.35x = 178,271,784.26
  5. Step 5: Solve for x
    x = 178,271,784.26/14,989.35
  6. Step 6: Final answer
    x = 11,893.23

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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.