Home / 27,996.08-38,686.08-20,429.60

Finding the Fourth Proportional to 27,996.08, 38,686.08 and 20,429.60

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Solution

The fourth proportional to 27,996.08, 38,686.08 and 20,429.60 is: 28,230.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.08 : 38,686.08 = 20,429.60 : x
  2. Step 2: Convert to fraction form
    27,996.08/38,686.08 = 20,429.60/x
  3. Step 3: Cross multiply
    27,996.08x = 38,686.08 × 20,429.60
  4. Step 4: Simplify right side
    27,996.08x = 790,341,139.97
  5. Step 5: Solve for x
    x = 790,341,139.97/27,996.08
  6. Step 6: Final answer
    x = 28,230.42

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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.