Home / 21,311.52-31,926.36-11,923.08

Finding the Fourth Proportional to 21,311.52, 31,926.36 and 11,923.08

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Solution

The fourth proportional to 21,311.52, 31,926.36 and 11,923.08 is: 17,861.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.52 : 31,926.36 = 11,923.08 : x
  2. Step 2: Convert to fraction form
    21,311.52/31,926.36 = 11,923.08/x
  3. Step 3: Cross multiply
    21,311.52x = 31,926.36 × 11,923.08
  4. Step 4: Simplify right side
    21,311.52x = 380,660,544.39
  5. Step 5: Solve for x
    x = 380,660,544.39/21,311.52
  6. Step 6: Final answer
    x = 17,861.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.