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Finding the Fourth Proportional to 19,097.60, 28,646.40 and 18,190.40

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Solution

The fourth proportional to 19,097.60, 28,646.40 and 18,190.40 is: 27,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,097.60 : 28,646.40 = 18,190.40 : x
  2. Step 2: Convert to fraction form
    19,097.60/28,646.40 = 18,190.40/x
  3. Step 3: Cross multiply
    19,097.60x = 28,646.40 × 18,190.40
  4. Step 4: Simplify right side
    19,097.60x = 521,089,474.56
  5. Step 5: Solve for x
    x = 521,089,474.56/19,097.60
  6. Step 6: Final answer
    x = 27,285.60

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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.