Home / 13,481.16-18,603.56-7,816.02

Finding the Fourth Proportional to 13,481.16, 18,603.56 and 7,816.02

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Solution

The fourth proportional to 13,481.16, 18,603.56 and 7,816.02 is: 10,785.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.16 : 18,603.56 = 7,816.02 : x
  2. Step 2: Convert to fraction form
    13,481.16/18,603.56 = 7,816.02/x
  3. Step 3: Cross multiply
    13,481.16x = 18,603.56 × 7,816.02
  4. Step 4: Simplify right side
    13,481.16x = 145,405,797.03
  5. Step 5: Solve for x
    x = 145,405,797.03/13,481.16
  6. Step 6: Final answer
    x = 10,785.85

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1.5x scale

Why These Related Problems?

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