Home / 21,890.54-30,181.31-14,324.88

Finding the Fourth Proportional to 21,890.54, 30,181.31 and 14,324.88

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Solution

The fourth proportional to 21,890.54, 30,181.31 and 14,324.88 is: 19,750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.54 : 30,181.31 = 14,324.88 : x
  2. Step 2: Convert to fraction form
    21,890.54/30,181.31 = 14,324.88/x
  3. Step 3: Cross multiply
    21,890.54x = 30,181.31 × 14,324.88
  4. Step 4: Simplify right side
    21,890.54x = 432,343,739.27
  5. Step 5: Solve for x
    x = 432,343,739.27/21,890.54
  6. Step 6: Final answer
    x = 19,750.26

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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.