Home / 21,331.63-31,997.31-7,284.88

Finding the Fourth Proportional to 21,331.63, 31,997.31 and 7,284.88

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Solution

The fourth proportional to 21,331.63, 31,997.31 and 7,284.88 is: 10,927.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.63 : 31,997.31 = 7,284.88 : x
  2. Step 2: Convert to fraction form
    21,331.63/31,997.31 = 7,284.88/x
  3. Step 3: Cross multiply
    21,331.63x = 31,997.31 × 7,284.88
  4. Step 4: Simplify right side
    21,331.63x = 233,096,563.67
  5. Step 5: Solve for x
    x = 233,096,563.67/21,331.63
  6. Step 6: Final answer
    x = 10,927.27

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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.