Home / 30,876.79-42,609.99-16,729.69

Finding the Fourth Proportional to 30,876.79, 42,609.99 and 16,729.69

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Solution

The fourth proportional to 30,876.79, 42,609.99 and 16,729.69 is: 23,086.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.79 : 42,609.99 = 16,729.69 : x
  2. Step 2: Convert to fraction form
    30,876.79/42,609.99 = 16,729.69/x
  3. Step 3: Cross multiply
    30,876.79x = 42,609.99 × 16,729.69
  4. Step 4: Simplify right side
    30,876.79x = 712,851,923.60
  5. Step 5: Solve for x
    x = 712,851,923.60/30,876.79
  6. Step 6: Final answer
    x = 23,086.98

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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.