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Finding the Fourth Proportional to 11,878.00, 16,372.76 and 9,356.12

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Solution

The fourth proportional to 11,878.00, 16,372.76 and 9,356.12 is: 12,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.00 : 16,372.76 = 9,356.12 : x
  2. Step 2: Convert to fraction form
    11,878.00/16,372.76 = 9,356.12/x
  3. Step 3: Cross multiply
    11,878.00x = 16,372.76 × 9,356.12
  4. Step 4: Simplify right side
    11,878.00x = 153,185,378.65
  5. Step 5: Solve for x
    x = 153,185,378.65/11,878.00
  6. Step 6: Final answer
    x = 12,896.57

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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.