Home / 27,983.73-38,620.27-20,897.85

Finding the Fourth Proportional to 27,983.73, 38,620.27 and 20,897.85

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Solution

The fourth proportional to 27,983.73, 38,620.27 and 20,897.85 is: 28,841.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,983.73 : 38,620.27 = 20,897.85 : x
  2. Step 2: Convert to fraction form
    27,983.73/38,620.27 = 20,897.85/x
  3. Step 3: Cross multiply
    27,983.73x = 38,620.27 × 20,897.85
  4. Step 4: Simplify right side
    27,983.73x = 807,080,609.42
  5. Step 5: Solve for x
    x = 807,080,609.42/27,983.73
  6. Step 6: Final answer
    x = 28,841.07

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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.