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Finding the Fourth Proportional to 12,485.28, 18,698.48 and 11,610.48

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Solution

The fourth proportional to 12,485.28, 18,698.48 and 11,610.48 is: 17,388.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.28 : 18,698.48 = 11,610.48 : x
  2. Step 2: Convert to fraction form
    12,485.28/18,698.48 = 11,610.48/x
  3. Step 3: Cross multiply
    12,485.28x = 18,698.48 × 11,610.48
  4. Step 4: Simplify right side
    12,485.28x = 217,098,328.07
  5. Step 5: Solve for x
    x = 217,098,328.07/12,485.28
  6. Step 6: Final answer
    x = 17,388.34

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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.