Home / 12,020.88-18,018.90-4,623.42

Finding the Fourth Proportional to 12,020.88, 18,018.90 and 4,623.42

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Solution

The fourth proportional to 12,020.88, 18,018.90 and 4,623.42 is: 6,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.88 : 18,018.90 = 4,623.42 : x
  2. Step 2: Convert to fraction form
    12,020.88/18,018.90 = 4,623.42/x
  3. Step 3: Cross multiply
    12,020.88x = 18,018.90 × 4,623.42
  4. Step 4: Simplify right side
    12,020.88x = 83,308,942.64
  5. Step 5: Solve for x
    x = 83,308,942.64/12,020.88
  6. Step 6: Final answer
    x = 6,930.35

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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.