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Finding the Fourth Proportional to 12,669.64, 17,484.12 and 7,080.64

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Solution

The fourth proportional to 12,669.64, 17,484.12 and 7,080.64 is: 9,771.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.64 : 17,484.12 = 7,080.64 : x
  2. Step 2: Convert to fraction form
    12,669.64/17,484.12 = 7,080.64/x
  3. Step 3: Cross multiply
    12,669.64x = 17,484.12 × 7,080.64
  4. Step 4: Simplify right side
    12,669.64x = 123,798,759.44
  5. Step 5: Solve for x
    x = 123,798,759.44/12,669.64
  6. Step 6: Final answer
    x = 9,771.29

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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.