Home / 10,518.21-15,777.19-3,021.96

Finding the Fourth Proportional to 10,518.21, 15,777.19 and 3,021.96

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Solution

The fourth proportional to 10,518.21, 15,777.19 and 3,021.96 is: 4,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.21 : 15,777.19 = 3,021.96 : x
  2. Step 2: Convert to fraction form
    10,518.21/15,777.19 = 3,021.96/x
  3. Step 3: Cross multiply
    10,518.21x = 15,777.19 × 3,021.96
  4. Step 4: Simplify right side
    10,518.21x = 47,677,996.18
  5. Step 5: Solve for x
    x = 47,677,996.18/10,518.21
  6. Step 6: Final answer
    x = 4,532.90

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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.