Home / 21,588.53-29,792.88-12,636.41

Finding the Fourth Proportional to 21,588.53, 29,792.88 and 12,636.41

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Solution

The fourth proportional to 21,588.53, 29,792.88 and 12,636.41 is: 17,438.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.53 : 29,792.88 = 12,636.41 : x
  2. Step 2: Convert to fraction form
    21,588.53/29,792.88 = 12,636.41/x
  3. Step 3: Cross multiply
    21,588.53x = 29,792.88 × 12,636.41
  4. Step 4: Simplify right side
    21,588.53x = 376,474,897.80
  5. Step 5: Solve for x
    x = 376,474,897.80/21,588.53
  6. Step 6: Final answer
    x = 17,438.66

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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.