Home / 12,120.45-16,726.23-6,815.27

Finding the Fourth Proportional to 12,120.45, 16,726.23 and 6,815.27

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Solution

The fourth proportional to 12,120.45, 16,726.23 and 6,815.27 is: 9,405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.45 : 16,726.23 = 6,815.27 : x
  2. Step 2: Convert to fraction form
    12,120.45/16,726.23 = 6,815.27/x
  3. Step 3: Cross multiply
    12,120.45x = 16,726.23 × 6,815.27
  4. Step 4: Simplify right side
    12,120.45x = 113,993,689.90
  5. Step 5: Solve for x
    x = 113,993,689.90/12,120.45
  6. Step 6: Final answer
    x = 9,405.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.