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Finding the Fourth Proportional to 16,556.40, 22,769.10 and 15,244.20

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Solution

The fourth proportional to 16,556.40, 22,769.10 and 15,244.20 is: 20,964.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,556.40 : 22,769.10 = 15,244.20 : x
  2. Step 2: Convert to fraction form
    16,556.40/22,769.10 = 15,244.20/x
  3. Step 3: Cross multiply
    16,556.40x = 22,769.10 × 15,244.20
  4. Step 4: Simplify right side
    16,556.40x = 347,096,714.22
  5. Step 5: Solve for x
    x = 347,096,714.22/16,556.40
  6. Step 6: Final answer
    x = 20,964.50

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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.