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Finding the Fourth Proportional to 12,606.81, 18,857.54 and 8,858.32

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Solution

The fourth proportional to 12,606.81, 18,857.54 and 8,858.32 is: 13,250.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.81 : 18,857.54 = 8,858.32 : x
  2. Step 2: Convert to fraction form
    12,606.81/18,857.54 = 8,858.32/x
  3. Step 3: Cross multiply
    12,606.81x = 18,857.54 × 8,858.32
  4. Step 4: Simplify right side
    12,606.81x = 167,046,212.64
  5. Step 5: Solve for x
    x = 167,046,212.64/12,606.81
  6. Step 6: Final answer
    x = 13,250.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.