Home / 12,708.45-19,043.94-7,078.36

Finding the Fourth Proportional to 12,708.45, 19,043.94 and 7,078.36

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Solution

The fourth proportional to 12,708.45, 19,043.94 and 7,078.36 is: 10,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.45 : 19,043.94 = 7,078.36 : x
  2. Step 2: Convert to fraction form
    12,708.45/19,043.94 = 7,078.36/x
  3. Step 3: Cross multiply
    12,708.45x = 19,043.94 × 7,078.36
  4. Step 4: Simplify right side
    12,708.45x = 134,799,923.71
  5. Step 5: Solve for x
    x = 134,799,923.71/12,708.45
  6. Step 6: Final answer
    x = 10,607.11

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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.