Home / 12,886.43-19,336.93-5,490.11

Finding the Fourth Proportional to 12,886.43, 19,336.93 and 5,490.11

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Solution

The fourth proportional to 12,886.43, 19,336.93 and 5,490.11 is: 8,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.43 : 19,336.93 = 5,490.11 : x
  2. Step 2: Convert to fraction form
    12,886.43/19,336.93 = 5,490.11/x
  3. Step 3: Cross multiply
    12,886.43x = 19,336.93 × 5,490.11
  4. Step 4: Simplify right side
    12,886.43x = 106,161,907.38
  5. Step 5: Solve for x
    x = 106,161,907.38/12,886.43
  6. Step 6: Final answer
    x = 8,238.27

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1.5x scale

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.