Home / 24,755.84-34,136.64-18,720

Finding the Fourth Proportional to 24,755.84, 34,136.64 and 18,720

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Solution

The fourth proportional to 24,755.84, 34,136.64 and 18,720 is: 25,813.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,755.84 : 34,136.64 = 18,720 : x
  2. Step 2: Convert to fraction form
    24,755.84/34,136.64 = 18,720/x
  3. Step 3: Cross multiply
    24,755.84x = 34,136.64 × 18,720
  4. Step 4: Simplify right side
    24,755.84x = 639,037,900.80
  5. Step 5: Solve for x
    x = 639,037,900.80/24,755.84
  6. Step 6: Final answer
    x = 25,813.62

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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.