Home / 30,876.19-42,609.35-16,729.04

Finding the Fourth Proportional to 30,876.19, 42,609.35 and 16,729.04

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Solution

The fourth proportional to 30,876.19, 42,609.35 and 16,729.04 is: 23,086.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.19 : 42,609.35 = 16,729.04 : x
  2. Step 2: Convert to fraction form
    30,876.19/42,609.35 = 16,729.04/x
  3. Step 3: Cross multiply
    30,876.19x = 42,609.35 × 16,729.04
  4. Step 4: Simplify right side
    30,876.19x = 712,813,520.52
  5. Step 5: Solve for x
    x = 712,813,520.52/30,876.19
  6. Step 6: Final answer
    x = 23,086.19

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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.