Home / 10,388.32-15,579.27-2,990.79

Finding the Fourth Proportional to 10,388.32, 15,579.27 and 2,990.79

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Solution

The fourth proportional to 10,388.32, 15,579.27 and 2,990.79 is: 4,485.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.32 : 15,579.27 = 2,990.79 : x
  2. Step 2: Convert to fraction form
    10,388.32/15,579.27 = 2,990.79/x
  3. Step 3: Cross multiply
    10,388.32x = 15,579.27 × 2,990.79
  4. Step 4: Simplify right side
    10,388.32x = 46,594,324.92
  5. Step 5: Solve for x
    x = 46,594,324.92/10,388.32
  6. Step 6: Final answer
    x = 4,485.26

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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.