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Finding the Fourth Proportional to 12,999.03, 17,930.16 and 8,966.04

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Solution

The fourth proportional to 12,999.03, 17,930.16 and 8,966.04 is: 12,367.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.03 : 17,930.16 = 8,966.04 : x
  2. Step 2: Convert to fraction form
    12,999.03/17,930.16 = 8,966.04/x
  3. Step 3: Cross multiply
    12,999.03x = 17,930.16 × 8,966.04
  4. Step 4: Simplify right side
    12,999.03x = 160,762,531.77
  5. Step 5: Solve for x
    x = 160,762,531.77/12,999.03
  6. Step 6: Final answer
    x = 12,367.27

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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.