Home / 20,010.55-30,015.84-5,219.45

Finding the Fourth Proportional to 20,010.55, 30,015.84 and 5,219.45

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Solution

The fourth proportional to 20,010.55, 30,015.84 and 5,219.45 is: 7,829.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,010.55 : 30,015.84 = 5,219.45 : x
  2. Step 2: Convert to fraction form
    20,010.55/30,015.84 = 5,219.45/x
  3. Step 3: Cross multiply
    20,010.55x = 30,015.84 × 5,219.45
  4. Step 4: Simplify right side
    20,010.55x = 156,666,176.09
  5. Step 5: Solve for x
    x = 156,666,176.09/20,010.55
  6. Step 6: Final answer
    x = 7,829.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.