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Finding the Fourth Proportional to 18,857.98, 28,291.02 and 6,377.41

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Solution

The fourth proportional to 18,857.98, 28,291.02 and 6,377.41 is: 9,567.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.98 : 28,291.02 = 6,377.41 : x
  2. Step 2: Convert to fraction form
    18,857.98/28,291.02 = 6,377.41/x
  3. Step 3: Cross multiply
    18,857.98x = 28,291.02 × 6,377.41
  4. Step 4: Simplify right side
    18,857.98x = 180,423,433.86
  5. Step 5: Solve for x
    x = 180,423,433.86/18,857.98
  6. Step 6: Final answer
    x = 9,567.48

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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.