Home / 45,204.40-67,830.90-18,911.80

Finding the Fourth Proportional to 45,204.40, 67,830.90 and 18,911.80

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Solution

The fourth proportional to 45,204.40, 67,830.90 and 18,911.80 is: 28,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,204.40 : 67,830.90 = 18,911.80 : x
  2. Step 2: Convert to fraction form
    45,204.40/67,830.90 = 18,911.80/x
  3. Step 3: Cross multiply
    45,204.40x = 67,830.90 × 18,911.80
  4. Step 4: Simplify right side
    45,204.40x = 1,282,804,414.62
  5. Step 5: Solve for x
    x = 1,282,804,414.62/45,204.40
  6. Step 6: Final answer
    x = 28,377.87

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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.