Home / 12,866.78-19,309.40-5,476.43

Finding the Fourth Proportional to 12,866.78, 19,309.40 and 5,476.43

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Solution

The fourth proportional to 12,866.78, 19,309.40 and 5,476.43 is: 8,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.78 : 19,309.40 = 5,476.43 : x
  2. Step 2: Convert to fraction form
    12,866.78/19,309.40 = 5,476.43/x
  3. Step 3: Cross multiply
    12,866.78x = 19,309.40 × 5,476.43
  4. Step 4: Simplify right side
    12,866.78x = 105,746,577.44
  5. Step 5: Solve for x
    x = 105,746,577.44/12,866.78
  6. Step 6: Final answer
    x = 8,218.57

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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.