Home / 12,090.52-18,121.74-6,900.04

Finding the Fourth Proportional to 12,090.52, 18,121.74 and 6,900.04

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Solution

The fourth proportional to 12,090.52, 18,121.74 and 6,900.04 is: 10,342.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.52 : 18,121.74 = 6,900.04 : x
  2. Step 2: Convert to fraction form
    12,090.52/18,121.74 = 6,900.04/x
  3. Step 3: Cross multiply
    12,090.52x = 18,121.74 × 6,900.04
  4. Step 4: Simplify right side
    12,090.52x = 125,040,730.87
  5. Step 5: Solve for x
    x = 125,040,730.87/12,090.52
  6. Step 6: Final answer
    x = 10,342.05

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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.