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Finding the Fourth Proportional to 11,478.60, 17,193.60 and 10,020.60

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Solution

The fourth proportional to 11,478.60, 17,193.60 and 10,020.60 is: 15,009.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.60 : 17,193.60 = 10,020.60 : x
  2. Step 2: Convert to fraction form
    11,478.60/17,193.60 = 10,020.60/x
  3. Step 3: Cross multiply
    11,478.60x = 17,193.60 × 10,020.60
  4. Step 4: Simplify right side
    11,478.60x = 172,290,188.16
  5. Step 5: Solve for x
    x = 172,290,188.16/11,478.60
  6. Step 6: Final answer
    x = 15,009.69

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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.