Home / 21,313.53-31,979.48-11,441.25

Finding the Fourth Proportional to 21,313.53, 31,979.48 and 11,441.25

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Solution

The fourth proportional to 21,313.53, 31,979.48 and 11,441.25 is: 17,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.53 : 31,979.48 = 11,441.25 : x
  2. Step 2: Convert to fraction form
    21,313.53/31,979.48 = 11,441.25/x
  3. Step 3: Cross multiply
    21,313.53x = 31,979.48 × 11,441.25
  4. Step 4: Simplify right side
    21,313.53x = 365,885,168.34
  5. Step 5: Solve for x
    x = 365,885,168.34/21,313.53
  6. Step 6: Final answer
    x = 17,166.80

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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.