Home / 19,761.78-27,255.51-16,787.46

Finding the Fourth Proportional to 19,761.78, 27,255.51 and 16,787.46

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Solution

The fourth proportional to 19,761.78, 27,255.51 and 16,787.46 is: 23,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.78 : 27,255.51 = 16,787.46 : x
  2. Step 2: Convert to fraction form
    19,761.78/27,255.51 = 16,787.46/x
  3. Step 3: Cross multiply
    19,761.78x = 27,255.51 × 16,787.46
  4. Step 4: Simplify right side
    19,761.78x = 457,550,783.90
  5. Step 5: Solve for x
    x = 457,550,783.90/19,761.78
  6. Step 6: Final answer
    x = 23,153.32

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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.