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Finding the Fourth Proportional to 16,681.20, 25,021.80 and 6,827.55

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Solution

The fourth proportional to 16,681.20, 25,021.80 and 6,827.55 is: 10,241.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,681.20 : 25,021.80 = 6,827.55 : x
  2. Step 2: Convert to fraction form
    16,681.20/25,021.80 = 6,827.55/x
  3. Step 3: Cross multiply
    16,681.20x = 25,021.80 × 6,827.55
  4. Step 4: Simplify right side
    16,681.20x = 170,837,590.59
  5. Step 5: Solve for x
    x = 170,837,590.59/16,681.20
  6. Step 6: Final answer
    x = 10,241.33

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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.