Home / 12,020.80-18,029.12-3,254.56

Finding the Fourth Proportional to 12,020.80, 18,029.12 and 3,254.56

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Solution

The fourth proportional to 12,020.80, 18,029.12 and 3,254.56 is: 4,881.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.80 : 18,029.12 = 3,254.56 : x
  2. Step 2: Convert to fraction form
    12,020.80/18,029.12 = 3,254.56/x
  3. Step 3: Cross multiply
    12,020.80x = 18,029.12 × 3,254.56
  4. Step 4: Simplify right side
    12,020.80x = 58,676,852.79
  5. Step 5: Solve for x
    x = 58,676,852.79/12,020.80
  6. Step 6: Final answer
    x = 4,881.28

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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.