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Finding the Fourth Proportional to 18,827.96, 28,207.51 and 8,814.33

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Solution

The fourth proportional to 18,827.96, 28,207.51 and 8,814.33 is: 13,205.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,827.96 : 28,207.51 = 8,814.33 : x
  2. Step 2: Convert to fraction form
    18,827.96/28,207.51 = 8,814.33/x
  3. Step 3: Cross multiply
    18,827.96x = 28,207.51 × 8,814.33
  4. Step 4: Simplify right side
    18,827.96x = 248,630,279.58
  5. Step 5: Solve for x
    x = 248,630,279.58/18,827.96
  6. Step 6: Final answer
    x = 13,205.38

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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.