Home / 21,112.85-29,102.18-16,629.50

Finding the Fourth Proportional to 21,112.85, 29,102.18 and 16,629.50

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Solution

The fourth proportional to 21,112.85, 29,102.18 and 16,629.50 is: 22,922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.85 : 29,102.18 = 16,629.50 : x
  2. Step 2: Convert to fraction form
    21,112.85/29,102.18 = 16,629.50/x
  3. Step 3: Cross multiply
    21,112.85x = 29,102.18 × 16,629.50
  4. Step 4: Simplify right side
    21,112.85x = 483,954,473.65
  5. Step 5: Solve for x
    x = 483,954,473.65/21,112.85
  6. Step 6: Final answer
    x = 22,922.28

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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.