Home / 12,090.18-16,685.19-6,785.34

Finding the Fourth Proportional to 12,090.18, 16,685.19 and 6,785.34

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Solution

The fourth proportional to 12,090.18, 16,685.19 and 6,785.34 is: 9,364.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.18 : 16,685.19 = 6,785.34 : x
  2. Step 2: Convert to fraction form
    12,090.18/16,685.19 = 6,785.34/x
  3. Step 3: Cross multiply
    12,090.18x = 16,685.19 × 6,785.34
  4. Step 4: Simplify right side
    12,090.18x = 113,214,687.11
  5. Step 5: Solve for x
    x = 113,214,687.11/12,090.18
  6. Step 6: Final answer
    x = 9,364.19

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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.