Home / 30,179.70-45,274.59-12,650.85

Finding the Fourth Proportional to 30,179.70, 45,274.59 and 12,650.85

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Solution

The fourth proportional to 30,179.70, 45,274.59 and 12,650.85 is: 18,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,179.70 : 45,274.59 = 12,650.85 : x
  2. Step 2: Convert to fraction form
    30,179.70/45,274.59 = 12,650.85/x
  3. Step 3: Cross multiply
    30,179.70x = 45,274.59 × 12,650.85
  4. Step 4: Simplify right side
    30,179.70x = 572,762,046.90
  5. Step 5: Solve for x
    x = 572,762,046.90/30,179.70
  6. Step 6: Final answer
    x = 18,978.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.