Home / 12,976.09-17,889.11-9,787.93

Finding the Fourth Proportional to 12,976.09, 17,889.11 and 9,787.93

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Solution

The fourth proportional to 12,976.09, 17,889.11 and 9,787.93 is: 13,493.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.09 : 17,889.11 = 9,787.93 : x
  2. Step 2: Convert to fraction form
    12,976.09/17,889.11 = 9,787.93/x
  3. Step 3: Cross multiply
    12,976.09x = 17,889.11 × 9,787.93
  4. Step 4: Simplify right side
    12,976.09x = 175,097,356.44
  5. Step 5: Solve for x
    x = 175,097,356.44/12,976.09
  6. Step 6: Final answer
    x = 13,493.85

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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.