Home / 21,984.04-30,337.92-11,912.76

Finding the Fourth Proportional to 21,984.04, 30,337.92 and 11,912.76

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Solution

The fourth proportional to 21,984.04, 30,337.92 and 11,912.76 is: 16,439.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.04 : 30,337.92 = 11,912.76 : x
  2. Step 2: Convert to fraction form
    21,984.04/30,337.92 = 11,912.76/x
  3. Step 3: Cross multiply
    21,984.04x = 30,337.92 × 11,912.76
  4. Step 4: Simplify right side
    21,984.04x = 361,408,359.86
  5. Step 5: Solve for x
    x = 361,408,359.86/21,984.04
  6. Step 6: Final answer
    x = 16,439.58

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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.