Home / 12,659.48-18,972.71-9,161.27

Finding the Fourth Proportional to 12,659.48, 18,972.71 and 9,161.27

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Solution

The fourth proportional to 12,659.48, 18,972.71 and 9,161.27 is: 13,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.48 : 18,972.71 = 9,161.27 : x
  2. Step 2: Convert to fraction form
    12,659.48/18,972.71 = 9,161.27/x
  3. Step 3: Cross multiply
    12,659.48x = 18,972.71 × 9,161.27
  4. Step 4: Simplify right side
    12,659.48x = 173,814,073.14
  5. Step 5: Solve for x
    x = 173,814,073.14/12,659.48
  6. Step 6: Final answer
    x = 13,729.95

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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.