Home / 20,351.81-30,528.72-6,321.39

Finding the Fourth Proportional to 20,351.81, 30,528.72 and 6,321.39

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Solution

The fourth proportional to 20,351.81, 30,528.72 and 6,321.39 is: 9,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.81 : 30,528.72 = 6,321.39 : x
  2. Step 2: Convert to fraction form
    20,351.81/30,528.72 = 6,321.39/x
  3. Step 3: Cross multiply
    20,351.81x = 30,528.72 × 6,321.39
  4. Step 4: Simplify right side
    20,351.81x = 192,983,945.32
  5. Step 5: Solve for x
    x = 192,983,945.32/20,351.81
  6. Step 6: Final answer
    x = 9,482.40

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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.