Home / 21,958.70-30,302.82-11,886.93

Finding the Fourth Proportional to 21,958.70, 30,302.82 and 11,886.93

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Solution

The fourth proportional to 21,958.70, 30,302.82 and 11,886.93 is: 16,403.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.70 : 30,302.82 = 11,886.93 : x
  2. Step 2: Convert to fraction form
    21,958.70/30,302.82 = 11,886.93/x
  3. Step 3: Cross multiply
    21,958.70x = 30,302.82 × 11,886.93
  4. Step 4: Simplify right side
    21,958.70x = 360,207,500.14
  5. Step 5: Solve for x
    x = 360,207,500.14/21,958.70
  6. Step 6: Final answer
    x = 16,403.87

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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.