Home / 21,956.85-30,300.39-11,885.28

Finding the Fourth Proportional to 21,956.85, 30,300.39 and 11,885.28

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Solution

The fourth proportional to 21,956.85, 30,300.39 and 11,885.28 is: 16,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.85 : 30,300.39 = 11,885.28 : x
  2. Step 2: Convert to fraction form
    21,956.85/30,300.39 = 11,885.28/x
  3. Step 3: Cross multiply
    21,956.85x = 30,300.39 × 11,885.28
  4. Step 4: Simplify right side
    21,956.85x = 360,128,619.26
  5. Step 5: Solve for x
    x = 360,128,619.26/21,956.85
  6. Step 6: Final answer
    x = 16,401.65

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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.