Home / 11,858.20-17,771.10-7,898.20

Finding the Fourth Proportional to 11,858.20, 17,771.10 and 7,898.20

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Solution

The fourth proportional to 11,858.20, 17,771.10 and 7,898.20 is: 11,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,858.20 : 17,771.10 = 7,898.20 : x
  2. Step 2: Convert to fraction form
    11,858.20/17,771.10 = 7,898.20/x
  3. Step 3: Cross multiply
    11,858.20x = 17,771.10 × 7,898.20
  4. Step 4: Simplify right side
    11,858.20x = 140,359,702.02
  5. Step 5: Solve for x
    x = 140,359,702.02/11,858.20
  6. Step 6: Final answer
    x = 11,836.51

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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.