Home / 20,512.37-30,768.53-4,929.99

Finding the Fourth Proportional to 20,512.37, 30,768.53 and 4,929.99

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Solution

The fourth proportional to 20,512.37, 30,768.53 and 4,929.99 is: 7,394.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.37 : 30,768.53 = 4,929.99 : x
  2. Step 2: Convert to fraction form
    20,512.37/30,768.53 = 4,929.99/x
  3. Step 3: Cross multiply
    20,512.37x = 30,768.53 × 4,929.99
  4. Step 4: Simplify right side
    20,512.37x = 151,688,557.54
  5. Step 5: Solve for x
    x = 151,688,557.54/20,512.37
  6. Step 6: Final answer
    x = 7,394.98

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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.