Home / 27,819.72-38,428.02-20,733.84

Finding the Fourth Proportional to 27,819.72, 38,428.02 and 20,733.84

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Solution

The fourth proportional to 27,819.72, 38,428.02 and 20,733.84 is: 28,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.72 : 38,428.02 = 20,733.84 : x
  2. Step 2: Convert to fraction form
    27,819.72/38,428.02 = 20,733.84/x
  3. Step 3: Cross multiply
    27,819.72x = 38,428.02 × 20,733.84
  4. Step 4: Simplify right side
    27,819.72x = 796,760,418.20
  5. Step 5: Solve for x
    x = 796,760,418.20/27,819.72
  6. Step 6: Final answer
    x = 28,640.13

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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.