Home / 18,883.40-26,071.34-11,720.97

Finding the Fourth Proportional to 18,883.40, 26,071.34 and 11,720.97

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Solution

The fourth proportional to 18,883.40, 26,071.34 and 11,720.97 is: 16,182.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.40 : 26,071.34 = 11,720.97 : x
  2. Step 2: Convert to fraction form
    18,883.40/26,071.34 = 11,720.97/x
  3. Step 3: Cross multiply
    18,883.40x = 26,071.34 × 11,720.97
  4. Step 4: Simplify right side
    18,883.40x = 305,581,335.39
  5. Step 5: Solve for x
    x = 305,581,335.39/18,883.40
  6. Step 6: Final answer
    x = 16,182.54

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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.