Home / 11,789.84-16,270.26-6,485

Finding the Fourth Proportional to 11,789.84, 16,270.26 and 6,485

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Solution

The fourth proportional to 11,789.84, 16,270.26 and 6,485 is: 8,949.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,789.84 : 16,270.26 = 6,485 : x
  2. Step 2: Convert to fraction form
    11,789.84/16,270.26 = 6,485/x
  3. Step 3: Cross multiply
    11,789.84x = 16,270.26 × 6,485
  4. Step 4: Simplify right side
    11,789.84x = 105,512,636.10
  5. Step 5: Solve for x
    x = 105,512,636.10/11,789.84
  6. Step 6: Final answer
    x = 8,949.45

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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.