Home / 20,745.60-31,102.56-10,364.64

Finding the Fourth Proportional to 20,745.60, 31,102.56 and 10,364.64

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Solution

The fourth proportional to 20,745.60, 31,102.56 and 10,364.64 is: 15,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.60 : 31,102.56 = 10,364.64 : x
  2. Step 2: Convert to fraction form
    20,745.60/31,102.56 = 10,364.64/x
  3. Step 3: Cross multiply
    20,745.60x = 31,102.56 × 10,364.64
  4. Step 4: Simplify right side
    20,745.60x = 322,366,837.48
  5. Step 5: Solve for x
    x = 322,366,837.48/20,745.60
  6. Step 6: Final answer
    x = 15,539.05

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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.