Home / 9,900.44-13,662.67-5,424.21

Finding the Fourth Proportional to 9,900.44, 13,662.67 and 5,424.21

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Solution

The fourth proportional to 9,900.44, 13,662.67 and 5,424.21 is: 7,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.44 : 13,662.67 = 5,424.21 : x
  2. Step 2: Convert to fraction form
    9,900.44/13,662.67 = 5,424.21/x
  3. Step 3: Cross multiply
    9,900.44x = 13,662.67 × 5,424.21
  4. Step 4: Simplify right side
    9,900.44x = 74,109,191.24
  5. Step 5: Solve for x
    x = 74,109,191.24/9,900.44
  6. Step 6: Final answer
    x = 7,485.44

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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.