Home / 30,876.97-42,610.23-16,729.81

Finding the Fourth Proportional to 30,876.97, 42,610.23 and 16,729.81

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Solution

The fourth proportional to 30,876.97, 42,610.23 and 16,729.81 is: 23,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.97 : 42,610.23 = 16,729.81 : x
  2. Step 2: Convert to fraction form
    30,876.97/42,610.23 = 16,729.81/x
  3. Step 3: Cross multiply
    30,876.97x = 42,610.23 × 16,729.81
  4. Step 4: Simplify right side
    30,876.97x = 712,861,051.96
  5. Step 5: Solve for x
    x = 712,861,051.96/30,876.97
  6. Step 6: Final answer
    x = 23,087.14

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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.