Home / 12,090.48-18,135.05-3,656.85

Finding the Fourth Proportional to 12,090.48, 18,135.05 and 3,656.85

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Solution

The fourth proportional to 12,090.48, 18,135.05 and 3,656.85 is: 5,485.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.48 : 18,135.05 = 3,656.85 : x
  2. Step 2: Convert to fraction form
    12,090.48/18,135.05 = 3,656.85/x
  3. Step 3: Cross multiply
    12,090.48x = 18,135.05 × 3,656.85
  4. Step 4: Simplify right side
    12,090.48x = 66,317,139.31
  5. Step 5: Solve for x
    x = 66,317,139.31/12,090.48
  6. Step 6: Final answer
    x = 5,485.07

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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.