Home / 20,621.81-30,932.69-5,039.43

Finding the Fourth Proportional to 20,621.81, 30,932.69 and 5,039.43

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Solution

The fourth proportional to 20,621.81, 30,932.69 and 5,039.43 is: 7,559.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.81 : 30,932.69 = 5,039.43 : x
  2. Step 2: Convert to fraction form
    20,621.81/30,932.69 = 5,039.43/x
  3. Step 3: Cross multiply
    20,621.81x = 30,932.69 × 5,039.43
  4. Step 4: Simplify right side
    20,621.81x = 155,883,100.77
  5. Step 5: Solve for x
    x = 155,883,100.77/20,621.81
  6. Step 6: Final answer
    x = 7,559.14

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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.