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Finding the Fourth Proportional to 17,953.82, 26,890.62 and 13,012.11

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Solution

The fourth proportional to 17,953.82, 26,890.62 and 13,012.11 is: 19,489.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,953.82 : 26,890.62 = 13,012.11 : x
  2. Step 2: Convert to fraction form
    17,953.82/26,890.62 = 13,012.11/x
  3. Step 3: Cross multiply
    17,953.82x = 26,890.62 × 13,012.11
  4. Step 4: Simplify right side
    17,953.82x = 349,903,656.61
  5. Step 5: Solve for x
    x = 349,903,656.61/17,953.82
  6. Step 6: Final answer
    x = 19,489.09

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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.