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Finding the Fourth Proportional to 20,627, 28,465.77 and 11,195.54

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Solution

The fourth proportional to 20,627, 28,465.77 and 11,195.54 is: 15,450.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627 : 28,465.77 = 11,195.54 : x
  2. Step 2: Convert to fraction form
    20,627/28,465.77 = 11,195.54/x
  3. Step 3: Cross multiply
    20,627x = 28,465.77 × 11,195.54
  4. Step 4: Simplify right side
    20,627x = 318,689,666.67
  5. Step 5: Solve for x
    x = 318,689,666.67/20,627
  6. Step 6: Final answer
    x = 15,450.12

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1.5x scale

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.