Home / 21,956.40-30,299.68-11,884.84

Finding the Fourth Proportional to 21,956.40, 30,299.68 and 11,884.84

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Solution

The fourth proportional to 21,956.40, 30,299.68 and 11,884.84 is: 16,401.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.40 : 30,299.68 = 11,884.84 : x
  2. Step 2: Convert to fraction form
    21,956.40/30,299.68 = 11,884.84/x
  3. Step 3: Cross multiply
    21,956.40x = 30,299.68 × 11,884.84
  4. Step 4: Simplify right side
    21,956.40x = 360,106,848.85
  5. Step 5: Solve for x
    x = 360,106,848.85/21,956.40
  6. Step 6: Final answer
    x = 16,401.00

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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.