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Finding the Fourth Proportional to 8,030.80, 12,021.90 and 8,030.80

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Solution

The fourth proportional to 8,030.80, 12,021.90 and 8,030.80 is: 12,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,030.80 : 12,021.90 = 8,030.80 : x
  2. Step 2: Convert to fraction form
    8,030.80/12,021.90 = 8,030.80/x
  3. Step 3: Cross multiply
    8,030.80x = 12,021.90 × 8,030.80
  4. Step 4: Simplify right side
    8,030.80x = 96,545,474.52
  5. Step 5: Solve for x
    x = 96,545,474.52/8,030.80
  6. Step 6: Final answer
    x = 12,021.90

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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.