Home / 12,076.42-16,640.49-9,709.06

Finding the Fourth Proportional to 12,076.42, 16,640.49 and 9,709.06

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Solution

The fourth proportional to 12,076.42, 16,640.49 and 9,709.06 is: 13,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,076.42 : 16,640.49 = 9,709.06 : x
  2. Step 2: Convert to fraction form
    12,076.42/16,640.49 = 9,709.06/x
  3. Step 3: Cross multiply
    12,076.42x = 16,640.49 × 9,709.06
  4. Step 4: Simplify right side
    12,076.42x = 161,563,515.84
  5. Step 5: Solve for x
    x = 161,563,515.84/12,076.42
  6. Step 6: Final answer
    x = 13,378.43

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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.