Home / 30,787.23-42,486.37-16,640.07

Finding the Fourth Proportional to 30,787.23, 42,486.37 and 16,640.07

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Solution

The fourth proportional to 30,787.23, 42,486.37 and 16,640.07 is: 22,963.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,787.23 : 42,486.37 = 16,640.07 : x
  2. Step 2: Convert to fraction form
    30,787.23/42,486.37 = 16,640.07/x
  3. Step 3: Cross multiply
    30,787.23x = 42,486.37 × 16,640.07
  4. Step 4: Simplify right side
    30,787.23x = 706,976,170.85
  5. Step 5: Solve for x
    x = 706,976,170.85/30,787.23
  6. Step 6: Final answer
    x = 22,963.29

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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.