Home / 21,220.92-29,283.66-11,788.88

Finding the Fourth Proportional to 21,220.92, 29,283.66 and 11,788.88

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Solution

The fourth proportional to 21,220.92, 29,283.66 and 11,788.88 is: 16,267.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.92 : 29,283.66 = 11,788.88 : x
  2. Step 2: Convert to fraction form
    21,220.92/29,283.66 = 11,788.88/x
  3. Step 3: Cross multiply
    21,220.92x = 29,283.66 × 11,788.88
  4. Step 4: Simplify right side
    21,220.92x = 345,221,407.28
  5. Step 5: Solve for x
    x = 345,221,407.28/21,220.92
  6. Step 6: Final answer
    x = 16,267.98

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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.