Home / 12,726.70-19,080.80-8,556.35

Finding the Fourth Proportional to 12,726.70, 19,080.80 and 8,556.35

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Solution

The fourth proportional to 12,726.70, 19,080.80 and 8,556.35 is: 12,828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.70 : 19,080.80 = 8,556.35 : x
  2. Step 2: Convert to fraction form
    12,726.70/19,080.80 = 8,556.35/x
  3. Step 3: Cross multiply
    12,726.70x = 19,080.80 × 8,556.35
  4. Step 4: Simplify right side
    12,726.70x = 163,261,896.98
  5. Step 5: Solve for x
    x = 163,261,896.98/12,726.70
  6. Step 6: Final answer
    x = 12,828.30

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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.