Home / 12,003.51-18,001.20-4,211.31

Finding the Fourth Proportional to 12,003.51, 18,001.20 and 4,211.31

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Solution

The fourth proportional to 12,003.51, 18,001.20 and 4,211.31 is: 6,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,003.51 : 18,001.20 = 4,211.31 : x
  2. Step 2: Convert to fraction form
    12,003.51/18,001.20 = 4,211.31/x
  3. Step 3: Cross multiply
    12,003.51x = 18,001.20 × 4,211.31
  4. Step 4: Simplify right side
    12,003.51x = 75,808,633.57
  5. Step 5: Solve for x
    x = 75,808,633.57/12,003.51
  6. Step 6: Final answer
    x = 6,315.54

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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.