Home / 10,489.37-15,719.87-5,809.19

Finding the Fourth Proportional to 10,489.37, 15,719.87 and 5,809.19

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Solution

The fourth proportional to 10,489.37, 15,719.87 and 5,809.19 is: 8,705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.37 : 15,719.87 = 5,809.19 : x
  2. Step 2: Convert to fraction form
    10,489.37/15,719.87 = 5,809.19/x
  3. Step 3: Cross multiply
    10,489.37x = 15,719.87 × 5,809.19
  4. Step 4: Simplify right side
    10,489.37x = 91,319,647.53
  5. Step 5: Solve for x
    x = 91,319,647.53/10,489.37
  6. Step 6: Final answer
    x = 8,705.93

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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.