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Finding the Fourth Proportional to 17,806.40, 26,712.48 and 7,945.44

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Solution

The fourth proportional to 17,806.40, 26,712.48 and 7,945.44 is: 11,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,806.40 : 26,712.48 = 7,945.44 : x
  2. Step 2: Convert to fraction form
    17,806.40/26,712.48 = 7,945.44/x
  3. Step 3: Cross multiply
    17,806.40x = 26,712.48 × 7,945.44
  4. Step 4: Simplify right side
    17,806.40x = 212,242,407.09
  5. Step 5: Solve for x
    x = 212,242,407.09/17,806.40
  6. Step 6: Final answer
    x = 11,919.45

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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.