Home / 21,101.76-29,116.98-11,668.50

Finding the Fourth Proportional to 21,101.76, 29,116.98 and 11,668.50

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Solution

The fourth proportional to 21,101.76, 29,116.98 and 11,668.50 is: 16,100.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.76 : 29,116.98 = 11,668.50 : x
  2. Step 2: Convert to fraction form
    21,101.76/29,116.98 = 11,668.50/x
  3. Step 3: Cross multiply
    21,101.76x = 29,116.98 × 11,668.50
  4. Step 4: Simplify right side
    21,101.76x = 339,751,481.13
  5. Step 5: Solve for x
    x = 339,751,481.13/21,101.76
  6. Step 6: Final answer
    x = 16,100.62

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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.