Home / 11,783.89-16,261.35-6,478.67

Finding the Fourth Proportional to 11,783.89, 16,261.35 and 6,478.67

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Solution

The fourth proportional to 11,783.89, 16,261.35 and 6,478.67 is: 8,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.89 : 16,261.35 = 6,478.67 : x
  2. Step 2: Convert to fraction form
    11,783.89/16,261.35 = 6,478.67/x
  3. Step 3: Cross multiply
    11,783.89x = 16,261.35 × 6,478.67
  4. Step 4: Simplify right side
    11,783.89x = 105,351,839.10
  5. Step 5: Solve for x
    x = 105,351,839.10/11,783.89
  6. Step 6: Final answer
    x = 8,940.33

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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.