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Finding the Fourth Proportional to 12,673.52, 17,471.16 and 8,688.32

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Solution

The fourth proportional to 12,673.52, 17,471.16 and 8,688.32 is: 11,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,673.52 : 17,471.16 = 8,688.32 : x
  2. Step 2: Convert to fraction form
    12,673.52/17,471.16 = 8,688.32/x
  3. Step 3: Cross multiply
    12,673.52x = 17,471.16 × 8,688.32
  4. Step 4: Simplify right side
    12,673.52x = 151,795,028.85
  5. Step 5: Solve for x
    x = 151,795,028.85/12,673.52
  6. Step 6: Final answer
    x = 11,977.34

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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.