Home / 12,090.19-16,685.31-6,785.23

Finding the Fourth Proportional to 12,090.19, 16,685.31 and 6,785.23

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Solution

The fourth proportional to 12,090.19, 16,685.31 and 6,785.23 is: 9,364.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.19 : 16,685.31 = 6,785.23 : x
  2. Step 2: Convert to fraction form
    12,090.19/16,685.31 = 6,785.23/x
  3. Step 3: Cross multiply
    12,090.19x = 16,685.31 × 6,785.23
  4. Step 4: Simplify right side
    12,090.19x = 113,213,665.97
  5. Step 5: Solve for x
    x = 113,213,665.97/12,090.19
  6. Step 6: Final answer
    x = 9,364.09

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Half scale
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Double scale
Find fourth proportional to 12,091.19, 16,686.69 and 6,786.23
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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.