Home / 53,853.12-80,787.36-16,920

Finding the Fourth Proportional to 53,853.12, 80,787.36 and 16,920

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Solution

The fourth proportional to 53,853.12, 80,787.36 and 16,920 is: 25,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,853.12 : 80,787.36 = 16,920 : x
  2. Step 2: Convert to fraction form
    53,853.12/80,787.36 = 16,920/x
  3. Step 3: Cross multiply
    53,853.12x = 80,787.36 × 16,920
  4. Step 4: Simplify right side
    53,853.12x = 1,366,922,131.20
  5. Step 5: Solve for x
    x = 1,366,922,131.20/53,853.12
  6. Step 6: Final answer
    x = 25,382.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.