Home / 20,485.52-30,699.48-11,707.28

Finding the Fourth Proportional to 20,485.52, 30,699.48 and 11,707.28

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Solution

The fourth proportional to 20,485.52, 30,699.48 and 11,707.28 is: 17,544.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.52 : 30,699.48 = 11,707.28 : x
  2. Step 2: Convert to fraction form
    20,485.52/30,699.48 = 11,707.28/x
  3. Step 3: Cross multiply
    20,485.52x = 30,699.48 × 11,707.28
  4. Step 4: Simplify right side
    20,485.52x = 359,407,408.21
  5. Step 5: Solve for x
    x = 359,407,408.21/20,485.52
  6. Step 6: Final answer
    x = 17,544.46

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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.