Home / 21,438.62-29,584.50-11,877.92

Finding the Fourth Proportional to 21,438.62, 29,584.50 and 11,877.92

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Solution

The fourth proportional to 21,438.62, 29,584.50 and 11,877.92 is: 16,391.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.62 : 29,584.50 = 11,877.92 : x
  2. Step 2: Convert to fraction form
    21,438.62/29,584.50 = 11,877.92/x
  3. Step 3: Cross multiply
    21,438.62x = 29,584.50 × 11,877.92
  4. Step 4: Simplify right side
    21,438.62x = 351,402,324.24
  5. Step 5: Solve for x
    x = 351,402,324.24/21,438.62
  6. Step 6: Final answer
    x = 16,391.09

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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.