Home / 30,929.90-42,680.66-18,183.50

Finding the Fourth Proportional to 30,929.90, 42,680.66 and 18,183.50

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Solution

The fourth proportional to 30,929.90, 42,680.66 and 18,183.50 is: 25,091.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,929.90 : 42,680.66 = 18,183.50 : x
  2. Step 2: Convert to fraction form
    30,929.90/42,680.66 = 18,183.50/x
  3. Step 3: Cross multiply
    30,929.90x = 42,680.66 × 18,183.50
  4. Step 4: Simplify right side
    30,929.90x = 776,083,476.79
  5. Step 5: Solve for x
    x = 776,083,476.79/30,929.90
  6. Step 6: Final answer
    x = 25,091.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.