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Finding the Fourth Proportional to 11,223.80, 15,682.60 and 11,223.80

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Solution

The fourth proportional to 11,223.80, 15,682.60 and 11,223.80 is: 15,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,223.80 : 15,682.60 = 11,223.80 : x
  2. Step 2: Convert to fraction form
    11,223.80/15,682.60 = 11,223.80/x
  3. Step 3: Cross multiply
    11,223.80x = 15,682.60 × 11,223.80
  4. Step 4: Simplify right side
    11,223.80x = 176,018,365.88
  5. Step 5: Solve for x
    x = 176,018,365.88/11,223.80
  6. Step 6: Final answer
    x = 15,682.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.