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Finding the Fourth Proportional to 12,998.76, 17,900.52 and 11,296.48

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Solution

The fourth proportional to 12,998.76, 17,900.52 and 11,296.48 is: 15,556.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.76 : 17,900.52 = 11,296.48 : x
  2. Step 2: Convert to fraction form
    12,998.76/17,900.52 = 11,296.48/x
  3. Step 3: Cross multiply
    12,998.76x = 17,900.52 × 11,296.48
  4. Step 4: Simplify right side
    12,998.76x = 202,212,866.17
  5. Step 5: Solve for x
    x = 202,212,866.17/12,998.76
  6. Step 6: Final answer
    x = 15,556.32

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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.