Home / 11,787.36-16,279.32-7,321.80

Finding the Fourth Proportional to 11,787.36, 16,279.32 and 7,321.80

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Solution

The fourth proportional to 11,787.36, 16,279.32 and 7,321.80 is: 10,112.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787.36 : 16,279.32 = 7,321.80 : x
  2. Step 2: Convert to fraction form
    11,787.36/16,279.32 = 7,321.80/x
  3. Step 3: Cross multiply
    11,787.36x = 16,279.32 × 7,321.80
  4. Step 4: Simplify right side
    11,787.36x = 119,193,925.18
  5. Step 5: Solve for x
    x = 119,193,925.18/11,787.36
  6. Step 6: Final answer
    x = 10,112.01

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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.