Home / 13,629.30-20,434.77-4,742.34

Finding the Fourth Proportional to 13,629.30, 20,434.77 and 4,742.34

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Solution

The fourth proportional to 13,629.30, 20,434.77 and 4,742.34 is: 7,110.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.30 : 20,434.77 = 4,742.34 : x
  2. Step 2: Convert to fraction form
    13,629.30/20,434.77 = 4,742.34/x
  3. Step 3: Cross multiply
    13,629.30x = 20,434.77 × 4,742.34
  4. Step 4: Simplify right side
    13,629.30x = 96,908,627.16
  5. Step 5: Solve for x
    x = 96,908,627.16/13,629.30
  6. Step 6: Final answer
    x = 7,110.32

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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.