Home / 12,946-19,405.52-8,786.40

Finding the Fourth Proportional to 12,946, 19,405.52 and 8,786.40

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Solution

The fourth proportional to 12,946, 19,405.52 and 8,786.40 is: 13,170.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,946 : 19,405.52 = 8,786.40 : x
  2. Step 2: Convert to fraction form
    12,946/19,405.52 = 8,786.40/x
  3. Step 3: Cross multiply
    12,946x = 19,405.52 × 8,786.40
  4. Step 4: Simplify right side
    12,946x = 170,504,660.93
  5. Step 5: Solve for x
    x = 170,504,660.93/12,946
  6. Step 6: Final answer
    x = 13,170.45

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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.