Home / 30,876.88-42,610.08-16,729.60

Finding the Fourth Proportional to 30,876.88, 42,610.08 and 16,729.60

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Solution

The fourth proportional to 30,876.88, 42,610.08 and 16,729.60 is: 23,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.88 : 42,610.08 = 16,729.60 : x
  2. Step 2: Convert to fraction form
    30,876.88/42,610.08 = 16,729.60/x
  3. Step 3: Cross multiply
    30,876.88x = 42,610.08 × 16,729.60
  4. Step 4: Simplify right side
    30,876.88x = 712,849,594.37
  5. Step 5: Solve for x
    x = 712,849,594.37/30,876.88
  6. Step 6: Final answer
    x = 23,086.84

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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.