Home / 10,128.40-15,183.36-3,551.00

Finding the Fourth Proportional to 10,128.40, 15,183.36 and 3,551.00

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Solution

The fourth proportional to 10,128.40, 15,183.36 and 3,551.00 is: 5,323.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.40 : 15,183.36 = 3,551.00 : x
  2. Step 2: Convert to fraction form
    10,128.40/15,183.36 = 3,551.00/x
  3. Step 3: Cross multiply
    10,128.40x = 15,183.36 × 3,551.00
  4. Step 4: Simplify right side
    10,128.40x = 53,916,035.44
  5. Step 5: Solve for x
    x = 53,916,035.44/10,128.40
  6. Step 6: Final answer
    x = 5,323.25

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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.