Home / 12,540.03-18,803.35-4,217.28

Finding the Fourth Proportional to 12,540.03, 18,803.35 and 4,217.28

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Solution

The fourth proportional to 12,540.03, 18,803.35 and 4,217.28 is: 6,323.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.03 : 18,803.35 = 4,217.28 : x
  2. Step 2: Convert to fraction form
    12,540.03/18,803.35 = 4,217.28/x
  3. Step 3: Cross multiply
    12,540.03x = 18,803.35 × 4,217.28
  4. Step 4: Simplify right side
    12,540.03x = 79,298,991.89
  5. Step 5: Solve for x
    x = 79,298,991.89/12,540.03
  6. Step 6: Final answer
    x = 6,323.67

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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.