Home / 18,633.11-25,708.59-12,961.49

Finding the Fourth Proportional to 18,633.11, 25,708.59 and 12,961.49

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Solution

The fourth proportional to 18,633.11, 25,708.59 and 12,961.49 is: 17,883.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.11 : 25,708.59 = 12,961.49 : x
  2. Step 2: Convert to fraction form
    18,633.11/25,708.59 = 12,961.49/x
  3. Step 3: Cross multiply
    18,633.11x = 25,708.59 × 12,961.49
  4. Step 4: Simplify right side
    18,633.11x = 333,221,503.66
  5. Step 5: Solve for x
    x = 333,221,503.66/18,633.11
  6. Step 6: Final answer
    x = 17,883.31

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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.