Home / 21,182.19-31,753.85-9,489.03

Finding the Fourth Proportional to 21,182.19, 31,753.85 and 9,489.03

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Solution

The fourth proportional to 21,182.19, 31,753.85 and 9,489.03 is: 14,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.19 : 31,753.85 = 9,489.03 : x
  2. Step 2: Convert to fraction form
    21,182.19/31,753.85 = 9,489.03/x
  3. Step 3: Cross multiply
    21,182.19x = 31,753.85 × 9,489.03
  4. Step 4: Simplify right side
    21,182.19x = 301,313,187.82
  5. Step 5: Solve for x
    x = 301,313,187.82/21,182.19
  6. Step 6: Final answer
    x = 14,224.84

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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.