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Finding the Fourth Proportional to 18,609.60, 27,856.80 and 10,795.20

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Solution

The fourth proportional to 18,609.60, 27,856.80 and 10,795.20 is: 16,159.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.60 : 27,856.80 = 10,795.20 : x
  2. Step 2: Convert to fraction form
    18,609.60/27,856.80 = 10,795.20/x
  3. Step 3: Cross multiply
    18,609.60x = 27,856.80 × 10,795.20
  4. Step 4: Simplify right side
    18,609.60x = 300,719,727.36
  5. Step 5: Solve for x
    x = 300,719,727.36/18,609.60
  6. Step 6: Final answer
    x = 16,159.39

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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.