Home / 21,958.38-30,302.28-11,886.62

Finding the Fourth Proportional to 21,958.38, 30,302.28 and 11,886.62

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Solution

The fourth proportional to 21,958.38, 30,302.28 and 11,886.62 is: 16,403.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.38 : 30,302.28 = 11,886.62 : x
  2. Step 2: Convert to fraction form
    21,958.38/30,302.28 = 11,886.62/x
  3. Step 3: Cross multiply
    21,958.38x = 30,302.28 × 11,886.62
  4. Step 4: Simplify right side
    21,958.38x = 360,191,535.98
  5. Step 5: Solve for x
    x = 360,191,535.98/21,958.38
  6. Step 6: Final answer
    x = 16,403.37

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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.