Home / 20,922.95-31,380.36-5,929.94

Finding the Fourth Proportional to 20,922.95, 31,380.36 and 5,929.94

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Solution

The fourth proportional to 20,922.95, 31,380.36 and 5,929.94 is: 8,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.95 : 31,380.36 = 5,929.94 : x
  2. Step 2: Convert to fraction form
    20,922.95/31,380.36 = 5,929.94/x
  3. Step 3: Cross multiply
    20,922.95x = 31,380.36 × 5,929.94
  4. Step 4: Simplify right side
    20,922.95x = 186,083,495.08
  5. Step 5: Solve for x
    x = 186,083,495.08/20,922.95
  6. Step 6: Final answer
    x = 8,893.75

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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.