Home / 11,129.30-16,669.65-4,880.96

Finding the Fourth Proportional to 11,129.30, 16,669.65 and 4,880.96

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Solution

The fourth proportional to 11,129.30, 16,669.65 and 4,880.96 is: 7,310.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.30 : 16,669.65 = 4,880.96 : x
  2. Step 2: Convert to fraction form
    11,129.30/16,669.65 = 4,880.96/x
  3. Step 3: Cross multiply
    11,129.30x = 16,669.65 × 4,880.96
  4. Step 4: Simplify right side
    11,129.30x = 81,363,894.86
  5. Step 5: Solve for x
    x = 81,363,894.86/11,129.30
  6. Step 6: Final answer
    x = 7,310.78

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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.