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Finding the Fourth Proportional to 12,664.64, 17,460.16 and 8,882.72

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Solution

The fourth proportional to 12,664.64, 17,460.16 and 8,882.72 is: 12,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.64 : 17,460.16 = 8,882.72 : x
  2. Step 2: Convert to fraction form
    12,664.64/17,460.16 = 8,882.72/x
  3. Step 3: Cross multiply
    12,664.64x = 17,460.16 × 8,882.72
  4. Step 4: Simplify right side
    12,664.64x = 155,093,712.44
  5. Step 5: Solve for x
    x = 155,093,712.44/12,664.64
  6. Step 6: Final answer
    x = 12,246.20

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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.