Home / 27,751.09-38,301.02-20,628.30

Finding the Fourth Proportional to 27,751.09, 38,301.02 and 20,628.30

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Solution

The fourth proportional to 27,751.09, 38,301.02 and 20,628.30 is: 28,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,751.09 : 38,301.02 = 20,628.30 : x
  2. Step 2: Convert to fraction form
    27,751.09/38,301.02 = 20,628.30/x
  3. Step 3: Cross multiply
    27,751.09x = 38,301.02 × 20,628.30
  4. Step 4: Simplify right side
    27,751.09x = 790,084,982.44
  5. Step 5: Solve for x
    x = 790,084,982.44/27,751.09
  6. Step 6: Final answer
    x = 28,470.42

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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.