Home / 12,090.15-18,138.29-5,853.15

Finding the Fourth Proportional to 12,090.15, 18,138.29 and 5,853.15

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Solution

The fourth proportional to 12,090.15, 18,138.29 and 5,853.15 is: 8,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.15 : 18,138.29 = 5,853.15 : x
  2. Step 2: Convert to fraction form
    12,090.15/18,138.29 = 5,853.15/x
  3. Step 3: Cross multiply
    12,090.15x = 18,138.29 × 5,853.15
  4. Step 4: Simplify right side
    12,090.15x = 106,166,102.85
  5. Step 5: Solve for x
    x = 106,166,102.85/12,090.15
  6. Step 6: Final answer
    x = 8,781.21

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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.