Home / 10,999.50-15,173.10-6,518.85

Finding the Fourth Proportional to 10,999.50, 15,173.10 and 6,518.85

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Solution

The fourth proportional to 10,999.50, 15,173.10 and 6,518.85 is: 8,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.50 : 15,173.10 = 6,518.85 : x
  2. Step 2: Convert to fraction form
    10,999.50/15,173.10 = 6,518.85/x
  3. Step 3: Cross multiply
    10,999.50x = 15,173.10 × 6,518.85
  4. Step 4: Simplify right side
    10,999.50x = 98,911,162.94
  5. Step 5: Solve for x
    x = 98,911,162.94/10,999.50
  6. Step 6: Final answer
    x = 8,992.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.