Home / 30,305.78-41,820.80-16,877.60

Finding the Fourth Proportional to 30,305.78, 41,820.80 and 16,877.60

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Solution

The fourth proportional to 30,305.78, 41,820.80 and 16,877.60 is: 23,290.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,305.78 : 41,820.80 = 16,877.60 : x
  2. Step 2: Convert to fraction form
    30,305.78/41,820.80 = 16,877.60/x
  3. Step 3: Cross multiply
    30,305.78x = 41,820.80 × 16,877.60
  4. Step 4: Simplify right side
    30,305.78x = 705,834,734.08
  5. Step 5: Solve for x
    x = 705,834,734.08/30,305.78
  6. Step 6: Final answer
    x = 23,290.43

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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.