Home / 30,872.88-42,604.56-16,725.60

Finding the Fourth Proportional to 30,872.88, 42,604.56 and 16,725.60

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Solution

The fourth proportional to 30,872.88, 42,604.56 and 16,725.60 is: 23,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,872.88 : 42,604.56 = 16,725.60 : x
  2. Step 2: Convert to fraction form
    30,872.88/42,604.56 = 16,725.60/x
  3. Step 3: Cross multiply
    30,872.88x = 42,604.56 × 16,725.60
  4. Step 4: Simplify right side
    30,872.88x = 712,586,828.74
  5. Step 5: Solve for x
    x = 712,586,828.74/30,872.88
  6. Step 6: Final answer
    x = 23,081.32

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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.