Home / 10,999.90-16,499.57-3,208.78

Finding the Fourth Proportional to 10,999.90, 16,499.57 and 3,208.78

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Solution

The fourth proportional to 10,999.90, 16,499.57 and 3,208.78 is: 4,813.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.90 : 16,499.57 = 3,208.78 : x
  2. Step 2: Convert to fraction form
    10,999.90/16,499.57 = 3,208.78/x
  3. Step 3: Cross multiply
    10,999.90x = 16,499.57 × 3,208.78
  4. Step 4: Simplify right side
    10,999.90x = 52,943,407.73
  5. Step 5: Solve for x
    x = 52,943,407.73/10,999.90
  6. Step 6: Final answer
    x = 4,813.08

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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.