Home / 19,255.40-28,883.10-8,160.20

Finding the Fourth Proportional to 19,255.40, 28,883.10 and 8,160.20

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Solution

The fourth proportional to 19,255.40, 28,883.10 and 8,160.20 is: 12,240.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,255.40 : 28,883.10 = 8,160.20 : x
  2. Step 2: Convert to fraction form
    19,255.40/28,883.10 = 8,160.20/x
  3. Step 3: Cross multiply
    19,255.40x = 28,883.10 × 8,160.20
  4. Step 4: Simplify right side
    19,255.40x = 235,691,872.62
  5. Step 5: Solve for x
    x = 235,691,872.62/19,255.40
  6. Step 6: Final answer
    x = 12,240.30

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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.