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Finding the Fourth Proportional to 11,920.49, 17,892.50 and 8,948.60

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Solution

The fourth proportional to 11,920.49, 17,892.50 and 8,948.60 is: 13,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.49 : 17,892.50 = 8,948.60 : x
  2. Step 2: Convert to fraction form
    11,920.49/17,892.50 = 8,948.60/x
  3. Step 3: Cross multiply
    11,920.49x = 17,892.50 × 8,948.60
  4. Step 4: Simplify right side
    11,920.49x = 160,112,825.51
  5. Step 5: Solve for x
    x = 160,112,825.51/11,920.49
  6. Step 6: Final answer
    x = 13,431.73

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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.