Home / 21,568.24-29,761.88-12,136.64

Finding the Fourth Proportional to 21,568.24, 29,761.88 and 12,136.64

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Solution

The fourth proportional to 21,568.24, 29,761.88 and 12,136.64 is: 16,747.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.24 : 29,761.88 = 12,136.64 : x
  2. Step 2: Convert to fraction form
    21,568.24/29,761.88 = 12,136.64/x
  3. Step 3: Cross multiply
    21,568.24x = 29,761.88 × 12,136.64
  4. Step 4: Simplify right side
    21,568.24x = 361,209,223.28
  5. Step 5: Solve for x
    x = 361,209,223.28/21,568.24
  6. Step 6: Final answer
    x = 16,747.27

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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.