Home / 11,868.84-16,378.46-6,491.13

Finding the Fourth Proportional to 11,868.84, 16,378.46 and 6,491.13

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Solution

The fourth proportional to 11,868.84, 16,378.46 and 6,491.13 is: 8,957.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.84 : 16,378.46 = 6,491.13 : x
  2. Step 2: Convert to fraction form
    11,868.84/16,378.46 = 6,491.13/x
  3. Step 3: Cross multiply
    11,868.84x = 16,378.46 × 6,491.13
  4. Step 4: Simplify right side
    11,868.84x = 106,314,680.60
  5. Step 5: Solve for x
    x = 106,314,680.60/11,868.84
  6. Step 6: Final answer
    x = 8,957.46

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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.