Home / 20,835.08-31,244.21-7,684.53

Finding the Fourth Proportional to 20,835.08, 31,244.21 and 7,684.53

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Solution

The fourth proportional to 20,835.08, 31,244.21 and 7,684.53 is: 11,523.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.08 : 31,244.21 = 7,684.53 : x
  2. Step 2: Convert to fraction form
    20,835.08/31,244.21 = 7,684.53/x
  3. Step 3: Cross multiply
    20,835.08x = 31,244.21 × 7,684.53
  4. Step 4: Simplify right side
    20,835.08x = 240,097,069.07
  5. Step 5: Solve for x
    x = 240,097,069.07/20,835.08
  6. Step 6: Final answer
    x = 11,523.69

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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.