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Finding the Fourth Proportional to 16,021.80, 22,109.63 and 8,851.88

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Solution

The fourth proportional to 16,021.80, 22,109.63 and 8,851.88 is: 12,215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,021.80 : 22,109.63 = 8,851.88 : x
  2. Step 2: Convert to fraction form
    16,021.80/22,109.63 = 8,851.88/x
  3. Step 3: Cross multiply
    16,021.80x = 22,109.63 × 8,851.88
  4. Step 4: Simplify right side
    16,021.80x = 195,711,802.62
  5. Step 5: Solve for x
    x = 195,711,802.62/16,021.80
  6. Step 6: Final answer
    x = 12,215.34

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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.