Home / 28,136.73-38,836.37-17,520.09

Finding the Fourth Proportional to 28,136.73, 38,836.37 and 17,520.09

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Solution

The fourth proportional to 28,136.73, 38,836.37 and 17,520.09 is: 24,182.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.73 : 38,836.37 = 17,520.09 : x
  2. Step 2: Convert to fraction form
    28,136.73/38,836.37 = 17,520.09/x
  3. Step 3: Cross multiply
    28,136.73x = 38,836.37 × 17,520.09
  4. Step 4: Simplify right side
    28,136.73x = 680,416,697.67
  5. Step 5: Solve for x
    x = 680,416,697.67/28,136.73
  6. Step 6: Final answer
    x = 24,182.51

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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.