Home / 27,729.27-38,298.29-20,209.23

Finding the Fourth Proportional to 27,729.27, 38,298.29 and 20,209.23

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Solution

The fourth proportional to 27,729.27, 38,298.29 and 20,209.23 is: 27,911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,729.27 : 38,298.29 = 20,209.23 : x
  2. Step 2: Convert to fraction form
    27,729.27/38,298.29 = 20,209.23/x
  3. Step 3: Cross multiply
    27,729.27x = 38,298.29 × 20,209.23
  4. Step 4: Simplify right side
    27,729.27x = 773,978,850.17
  5. Step 5: Solve for x
    x = 773,978,850.17/27,729.27
  6. Step 6: Final answer
    x = 27,911.98

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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.