Home / 21,223.98-29,289.61-11,663.79

Finding the Fourth Proportional to 21,223.98, 29,289.61 and 11,663.79

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Solution

The fourth proportional to 21,223.98, 29,289.61 and 11,663.79 is: 16,096.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.98 : 29,289.61 = 11,663.79 : x
  2. Step 2: Convert to fraction form
    21,223.98/29,289.61 = 11,663.79/x
  3. Step 3: Cross multiply
    21,223.98x = 29,289.61 × 11,663.79
  4. Step 4: Simplify right side
    21,223.98x = 341,627,860.22
  5. Step 5: Solve for x
    x = 341,627,860.22/21,223.98
  6. Step 6: Final answer
    x = 16,096.31

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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.