Home / 21,683.88-32,490.62-11,139.27

Finding the Fourth Proportional to 21,683.88, 32,490.62 and 11,139.27

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Solution

The fourth proportional to 21,683.88, 32,490.62 and 11,139.27 is: 16,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,683.88 : 32,490.62 = 11,139.27 : x
  2. Step 2: Convert to fraction form
    21,683.88/32,490.62 = 11,139.27/x
  3. Step 3: Cross multiply
    21,683.88x = 32,490.62 × 11,139.27
  4. Step 4: Simplify right side
    21,683.88x = 361,921,835.64
  5. Step 5: Solve for x
    x = 361,921,835.64/21,683.88
  6. Step 6: Final answer
    x = 16,690.83

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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.