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Finding the Fourth Proportional to 8,930.43, 13,379.58 and 8,403.48

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Solution

The fourth proportional to 8,930.43, 13,379.58 and 8,403.48 is: 12,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.43 : 13,379.58 = 8,403.48 : x
  2. Step 2: Convert to fraction form
    8,930.43/13,379.58 = 8,403.48/x
  3. Step 3: Cross multiply
    8,930.43x = 13,379.58 × 8,403.48
  4. Step 4: Simplify right side
    8,930.43x = 112,435,032.94
  5. Step 5: Solve for x
    x = 112,435,032.94/8,930.43
  6. Step 6: Final answer
    x = 12,590.10

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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.