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Finding the Fourth Proportional to 20,627.40, 28,465.98 and 11,196

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Solution

The fourth proportional to 20,627.40, 28,465.98 and 11,196 is: 15,450.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.40 : 28,465.98 = 11,196 : x
  2. Step 2: Convert to fraction form
    20,627.40/28,465.98 = 11,196/x
  3. Step 3: Cross multiply
    20,627.40x = 28,465.98 × 11,196
  4. Step 4: Simplify right side
    20,627.40x = 318,705,112.08
  5. Step 5: Solve for x
    x = 318,705,112.08/20,627.40
  6. Step 6: Final answer
    x = 15,450.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.