Home / 21,958.18-30,302.31-11,886.64

Finding the Fourth Proportional to 21,958.18, 30,302.31 and 11,886.64

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Solution

The fourth proportional to 21,958.18, 30,302.31 and 11,886.64 is: 16,403.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.18 : 30,302.31 = 11,886.64 : x
  2. Step 2: Convert to fraction form
    21,958.18/30,302.31 = 11,886.64/x
  3. Step 3: Cross multiply
    21,958.18x = 30,302.31 × 11,886.64
  4. Step 4: Simplify right side
    21,958.18x = 360,192,650.14
  5. Step 5: Solve for x
    x = 360,192,650.14/21,958.18
  6. Step 6: Final answer
    x = 16,403.57

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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.