Home / 20,684.49-31,038.38-11,196.56

Finding the Fourth Proportional to 20,684.49, 31,038.38 and 11,196.56

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Solution

The fourth proportional to 20,684.49, 31,038.38 and 11,196.56 is: 16,801.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.49 : 31,038.38 = 11,196.56 : x
  2. Step 2: Convert to fraction form
    20,684.49/31,038.38 = 11,196.56/x
  3. Step 3: Cross multiply
    20,684.49x = 31,038.38 × 11,196.56
  4. Step 4: Simplify right side
    20,684.49x = 347,523,083.97
  5. Step 5: Solve for x
    x = 347,523,083.97/20,684.49
  6. Step 6: Final answer
    x = 16,801.14

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1.5x scale

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.