Home / 21,983.46-30,337.20-11,911.98

Finding the Fourth Proportional to 21,983.46, 30,337.20 and 11,911.98

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Solution

The fourth proportional to 21,983.46, 30,337.20 and 11,911.98 is: 16,438.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.46 : 30,337.20 = 11,911.98 : x
  2. Step 2: Convert to fraction form
    21,983.46/30,337.20 = 11,911.98/x
  3. Step 3: Cross multiply
    21,983.46x = 30,337.20 × 11,911.98
  4. Step 4: Simplify right side
    21,983.46x = 361,376,119.66
  5. Step 5: Solve for x
    x = 361,376,119.66/21,983.46
  6. Step 6: Final answer
    x = 16,438.55

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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.