Home / 13,632.21-18,807.12-7,662.51

Finding the Fourth Proportional to 13,632.21, 18,807.12 and 7,662.51

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Solution

The fourth proportional to 13,632.21, 18,807.12 and 7,662.51 is: 10,571.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.21 : 18,807.12 = 7,662.51 : x
  2. Step 2: Convert to fraction form
    13,632.21/18,807.12 = 7,662.51/x
  3. Step 3: Cross multiply
    13,632.21x = 18,807.12 × 7,662.51
  4. Step 4: Simplify right side
    13,632.21x = 144,109,745.07
  5. Step 5: Solve for x
    x = 144,109,745.07/13,632.21
  6. Step 6: Final answer
    x = 10,571.27

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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.