Home / 20,132.74-27,774.08-12,960.09

Finding the Fourth Proportional to 20,132.74, 27,774.08 and 12,960.09

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Solution

The fourth proportional to 20,132.74, 27,774.08 and 12,960.09 is: 17,879.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.74 : 27,774.08 = 12,960.09 : x
  2. Step 2: Convert to fraction form
    20,132.74/27,774.08 = 12,960.09/x
  3. Step 3: Cross multiply
    20,132.74x = 27,774.08 × 12,960.09
  4. Step 4: Simplify right side
    20,132.74x = 359,954,502.98
  5. Step 5: Solve for x
    x = 359,954,502.98/20,132.74
  6. Step 6: Final answer
    x = 17,879.06

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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.