Home / 13,632.39-20,448.38-3,638.10

Finding the Fourth Proportional to 13,632.39, 20,448.38 and 3,638.10

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Solution

The fourth proportional to 13,632.39, 20,448.38 and 3,638.10 is: 5,457.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.39 : 20,448.38 = 3,638.10 : x
  2. Step 2: Convert to fraction form
    13,632.39/20,448.38 = 3,638.10/x
  3. Step 3: Cross multiply
    13,632.39x = 20,448.38 × 3,638.10
  4. Step 4: Simplify right side
    13,632.39x = 74,393,233.09
  5. Step 5: Solve for x
    x = 74,393,233.09/13,632.39
  6. Step 6: Final answer
    x = 5,457.09

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1.5x scale

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.