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Finding the Fourth Proportional to 16,773.40, 25,131.30 and 7,989.40

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Solution

The fourth proportional to 16,773.40, 25,131.30 and 7,989.40 is: 11,970.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,773.40 : 25,131.30 = 7,989.40 : x
  2. Step 2: Convert to fraction form
    16,773.40/25,131.30 = 7,989.40/x
  3. Step 3: Cross multiply
    16,773.40x = 25,131.30 × 7,989.40
  4. Step 4: Simplify right side
    16,773.40x = 200,784,008.22
  5. Step 5: Solve for x
    x = 200,784,008.22/16,773.40
  6. Step 6: Final answer
    x = 11,970.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.