Home / 10,039.75-13,861.35-6,456.32

Finding the Fourth Proportional to 10,039.75, 13,861.35 and 6,456.32

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Solution

The fourth proportional to 10,039.75, 13,861.35 and 6,456.32 is: 8,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,039.75 : 13,861.35 = 6,456.32 : x
  2. Step 2: Convert to fraction form
    10,039.75/13,861.35 = 6,456.32/x
  3. Step 3: Cross multiply
    10,039.75x = 13,861.35 × 6,456.32
  4. Step 4: Simplify right side
    10,039.75x = 89,493,241.93
  5. Step 5: Solve for x
    x = 89,493,241.93/10,039.75
  6. Step 6: Final answer
    x = 8,913.90

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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.