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Finding the Fourth Proportional to 19,761, 27,263.28 and 11,262.12

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Solution

The fourth proportional to 19,761, 27,263.28 and 11,262.12 is: 15,537.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761 : 27,263.28 = 11,262.12 : x
  2. Step 2: Convert to fraction form
    19,761/27,263.28 = 11,262.12/x
  3. Step 3: Cross multiply
    19,761x = 27,263.28 × 11,262.12
  4. Step 4: Simplify right side
    19,761x = 307,042,330.95
  5. Step 5: Solve for x
    x = 307,042,330.95/19,761
  6. Step 6: Final answer
    x = 15,537.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.