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Finding the Fourth Proportional to 12,866.34, 17,748.81 and 8,675.94

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Solution

The fourth proportional to 12,866.34, 17,748.81 and 8,675.94 is: 11,968.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.34 : 17,748.81 = 8,675.94 : x
  2. Step 2: Convert to fraction form
    12,866.34/17,748.81 = 8,675.94/x
  3. Step 3: Cross multiply
    12,866.34x = 17,748.81 × 8,675.94
  4. Step 4: Simplify right side
    12,866.34x = 153,987,610.63
  5. Step 5: Solve for x
    x = 153,987,610.63/12,866.34
  6. Step 6: Final answer
    x = 11,968.25

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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.