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Finding the Fourth Proportional to 12,976.55, 17,907.64 and 7,008.22

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Solution

The fourth proportional to 12,976.55, 17,907.64 and 7,008.22 is: 9,671.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.55 : 17,907.64 = 7,008.22 : x
  2. Step 2: Convert to fraction form
    12,976.55/17,907.64 = 7,008.22/x
  3. Step 3: Cross multiply
    12,976.55x = 17,907.64 × 7,008.22
  4. Step 4: Simplify right side
    12,976.55x = 125,500,680.80
  5. Step 5: Solve for x
    x = 125,500,680.80/12,976.55
  6. Step 6: Final answer
    x = 9,671.34

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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.