Home / 18,740.37-28,109.78-4,699.32

Finding the Fourth Proportional to 18,740.37, 28,109.78 and 4,699.32

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Solution

The fourth proportional to 18,740.37, 28,109.78 and 4,699.32 is: 7,048.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.37 : 28,109.78 = 4,699.32 : x
  2. Step 2: Convert to fraction form
    18,740.37/28,109.78 = 4,699.32/x
  3. Step 3: Cross multiply
    18,740.37x = 28,109.78 × 4,699.32
  4. Step 4: Simplify right side
    18,740.37x = 132,096,766.50
  5. Step 5: Solve for x
    x = 132,096,766.50/18,740.37
  6. Step 6: Final answer
    x = 7,048.78

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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.