Home / 30,872.84-42,604.25-16,725.65

Finding the Fourth Proportional to 30,872.84, 42,604.25 and 16,725.65

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Solution

The fourth proportional to 30,872.84, 42,604.25 and 16,725.65 is: 23,081.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,872.84 : 42,604.25 = 16,725.65 : x
  2. Step 2: Convert to fraction form
    30,872.84/42,604.25 = 16,725.65/x
  3. Step 3: Cross multiply
    30,872.84x = 42,604.25 × 16,725.65
  4. Step 4: Simplify right side
    30,872.84x = 712,583,477.36
  5. Step 5: Solve for x
    x = 712,583,477.36/30,872.84
  6. Step 6: Final answer
    x = 23,081.25

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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.