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Finding the Fourth Proportional to 12,145.40, 16,651.40 and 11,924.00

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Solution

The fourth proportional to 12,145.40, 16,651.40 and 11,924.00 is: 16,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.40 : 16,651.40 = 11,924.00 : x
  2. Step 2: Convert to fraction form
    12,145.40/16,651.40 = 11,924.00/x
  3. Step 3: Cross multiply
    12,145.40x = 16,651.40 × 11,924.00
  4. Step 4: Simplify right side
    12,145.40x = 198,551,240.15
  5. Step 5: Solve for x
    x = 198,551,240.15/12,145.40
  6. Step 6: Final answer
    x = 16,347.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.