Home / 21,283.78-31,939.44-9,596.29

Finding the Fourth Proportional to 21,283.78, 31,939.44 and 9,596.29

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Solution

The fourth proportional to 21,283.78, 31,939.44 and 9,596.29 is: 14,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.78 : 31,939.44 = 9,596.29 : x
  2. Step 2: Convert to fraction form
    21,283.78/31,939.44 = 9,596.29/x
  3. Step 3: Cross multiply
    21,283.78x = 31,939.44 × 9,596.29
  4. Step 4: Simplify right side
    21,283.78x = 306,500,128.68
  5. Step 5: Solve for x
    x = 306,500,128.68/21,283.78
  6. Step 6: Final answer
    x = 14,400.64

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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.