Home / 18,771.98-28,190.16-16,668.36

Finding the Fourth Proportional to 18,771.98, 28,190.16 and 16,668.36

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Solution

The fourth proportional to 18,771.98, 28,190.16 and 16,668.36 is: 25,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.98 : 28,190.16 = 16,668.36 : x
  2. Step 2: Convert to fraction form
    18,771.98/28,190.16 = 16,668.36/x
  3. Step 3: Cross multiply
    18,771.98x = 28,190.16 × 16,668.36
  4. Step 4: Simplify right side
    18,771.98x = 469,883,735.34
  5. Step 5: Solve for x
    x = 469,883,735.34/18,771.98
  6. Step 6: Final answer
    x = 25,031.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.