Home / 12,786.52-19,176.10-5,392.64

Finding the Fourth Proportional to 12,786.52, 19,176.10 and 5,392.64

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Solution

The fourth proportional to 12,786.52, 19,176.10 and 5,392.64 is: 8,087.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.52 : 19,176.10 = 5,392.64 : x
  2. Step 2: Convert to fraction form
    12,786.52/19,176.10 = 5,392.64/x
  3. Step 3: Cross multiply
    12,786.52x = 19,176.10 × 5,392.64
  4. Step 4: Simplify right side
    12,786.52x = 103,409,803.90
  5. Step 5: Solve for x
    x = 103,409,803.90/12,786.52
  6. Step 6: Final answer
    x = 8,087.41

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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.