Home / 27,986.67-38,624.33-20,900.79

Finding the Fourth Proportional to 27,986.67, 38,624.33 and 20,900.79

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Solution

The fourth proportional to 27,986.67, 38,624.33 and 20,900.79 is: 28,845.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.67 : 38,624.33 = 20,900.79 : x
  2. Step 2: Convert to fraction form
    27,986.67/38,624.33 = 20,900.79/x
  3. Step 3: Cross multiply
    27,986.67x = 38,624.33 × 20,900.79
  4. Step 4: Simplify right side
    27,986.67x = 807,279,062.47
  5. Step 5: Solve for x
    x = 807,279,062.47/27,986.67
  6. Step 6: Final answer
    x = 28,845.13

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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.