Home / 20,435.52-30,704.40-13,043.28

Finding the Fourth Proportional to 20,435.52, 30,704.40 and 13,043.28

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Solution

The fourth proportional to 20,435.52, 30,704.40 and 13,043.28 is: 19,597.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.52 : 30,704.40 = 13,043.28 : x
  2. Step 2: Convert to fraction form
    20,435.52/30,704.40 = 13,043.28/x
  3. Step 3: Cross multiply
    20,435.52x = 30,704.40 × 13,043.28
  4. Step 4: Simplify right side
    20,435.52x = 400,486,086.43
  5. Step 5: Solve for x
    x = 400,486,086.43/20,435.52
  6. Step 6: Final answer
    x = 19,597.55

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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.