Home / 12,120.23-16,726.30-6,815.34

Finding the Fourth Proportional to 12,120.23, 16,726.30 and 6,815.34

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Solution

The fourth proportional to 12,120.23, 16,726.30 and 6,815.34 is: 9,405.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.23 : 16,726.30 = 6,815.34 : x
  2. Step 2: Convert to fraction form
    12,120.23/16,726.30 = 6,815.34/x
  3. Step 3: Cross multiply
    12,120.23x = 16,726.30 × 6,815.34
  4. Step 4: Simplify right side
    12,120.23x = 113,995,404.40
  5. Step 5: Solve for x
    x = 113,995,404.40/12,120.23
  6. Step 6: Final answer
    x = 9,405.38

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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.