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Finding the Fourth Proportional to 19,101.10, 28,651.65 and 18,007.60

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Solution

The fourth proportional to 19,101.10, 28,651.65 and 18,007.60 is: 27,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,101.10 : 28,651.65 = 18,007.60 : x
  2. Step 2: Convert to fraction form
    19,101.10/28,651.65 = 18,007.60/x
  3. Step 3: Cross multiply
    19,101.10x = 28,651.65 × 18,007.60
  4. Step 4: Simplify right side
    19,101.10x = 515,947,452.54
  5. Step 5: Solve for x
    x = 515,947,452.54/19,101.10
  6. Step 6: Final answer
    x = 27,011.40

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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.