Home / 12,006.20-18,014.70-4,220.60

Finding the Fourth Proportional to 12,006.20, 18,014.70 and 4,220.60

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Solution

The fourth proportional to 12,006.20, 18,014.70 and 4,220.60 is: 6,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.20 : 18,014.70 = 4,220.60 : x
  2. Step 2: Convert to fraction form
    12,006.20/18,014.70 = 4,220.60/x
  3. Step 3: Cross multiply
    12,006.20x = 18,014.70 × 4,220.60
  4. Step 4: Simplify right side
    12,006.20x = 76,032,842.82
  5. Step 5: Solve for x
    x = 76,032,842.82/12,006.20
  6. Step 6: Final answer
    x = 6,332.80

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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.