Home / 10,861.45-14,989.11-6,145.63

Finding the Fourth Proportional to 10,861.45, 14,989.11 and 6,145.63

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Solution

The fourth proportional to 10,861.45, 14,989.11 and 6,145.63 is: 8,481.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.45 : 14,989.11 = 6,145.63 : x
  2. Step 2: Convert to fraction form
    10,861.45/14,989.11 = 6,145.63/x
  3. Step 3: Cross multiply
    10,861.45x = 14,989.11 × 6,145.63
  4. Step 4: Simplify right side
    10,861.45x = 92,117,524.09
  5. Step 5: Solve for x
    x = 92,117,524.09/10,861.45
  6. Step 6: Final answer
    x = 8,481.14

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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.