Home / 22,780.44-31,435.44-13,220.60

Finding the Fourth Proportional to 22,780.44, 31,435.44 and 13,220.60

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Solution

The fourth proportional to 22,780.44, 31,435.44 and 13,220.60 is: 18,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.44 : 31,435.44 = 13,220.60 : x
  2. Step 2: Convert to fraction form
    22,780.44/31,435.44 = 13,220.60/x
  3. Step 3: Cross multiply
    22,780.44x = 31,435.44 × 13,220.60
  4. Step 4: Simplify right side
    22,780.44x = 415,595,378.06
  5. Step 5: Solve for x
    x = 415,595,378.06/22,780.44
  6. Step 6: Final answer
    x = 18,243.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.