Home / 30,877.97-42,611.85-16,730.80

Finding the Fourth Proportional to 30,877.97, 42,611.85 and 16,730.80

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Solution

The fourth proportional to 30,877.97, 42,611.85 and 16,730.80 is: 23,088.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,877.97 : 42,611.85 = 16,730.80 : x
  2. Step 2: Convert to fraction form
    30,877.97/42,611.85 = 16,730.80/x
  3. Step 3: Cross multiply
    30,877.97x = 42,611.85 × 16,730.80
  4. Step 4: Simplify right side
    30,877.97x = 712,930,233.45
  5. Step 5: Solve for x
    x = 712,930,233.45/30,877.97
  6. Step 6: Final answer
    x = 23,088.64

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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.