Home / 30,876.05-42,608.88-16,728.95

Finding the Fourth Proportional to 30,876.05, 42,608.88 and 16,728.95

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Solution

The fourth proportional to 30,876.05, 42,608.88 and 16,728.95 is: 23,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.05 : 42,608.88 = 16,728.95 : x
  2. Step 2: Convert to fraction form
    30,876.05/42,608.88 = 16,728.95/x
  3. Step 3: Cross multiply
    30,876.05x = 42,608.88 × 16,728.95
  4. Step 4: Simplify right side
    30,876.05x = 712,801,610.03
  5. Step 5: Solve for x
    x = 712,801,610.03/30,876.05
  6. Step 6: Final answer
    x = 23,085.91

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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.