Home / 12,678.44-19,017.92-3,913.36

Finding the Fourth Proportional to 12,678.44, 19,017.92 and 3,913.36

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Solution

The fourth proportional to 12,678.44, 19,017.92 and 3,913.36 is: 5,870.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.44 : 19,017.92 = 3,913.36 : x
  2. Step 2: Convert to fraction form
    12,678.44/19,017.92 = 3,913.36/x
  3. Step 3: Cross multiply
    12,678.44x = 19,017.92 × 3,913.36
  4. Step 4: Simplify right side
    12,678.44x = 74,423,967.41
  5. Step 5: Solve for x
    x = 74,423,967.41/12,678.44
  6. Step 6: Final answer
    x = 5,870.12

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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.