Home / 27,828.06-38,382.39-20,276.70

Finding the Fourth Proportional to 27,828.06, 38,382.39 and 20,276.70

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Solution

The fourth proportional to 27,828.06, 38,382.39 and 20,276.70 is: 27,967.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,828.06 : 38,382.39 = 20,276.70 : x
  2. Step 2: Convert to fraction form
    27,828.06/38,382.39 = 20,276.70/x
  3. Step 3: Cross multiply
    27,828.06x = 38,382.39 × 20,276.70
  4. Step 4: Simplify right side
    27,828.06x = 778,268,207.31
  5. Step 5: Solve for x
    x = 778,268,207.31/27,828.06
  6. Step 6: Final answer
    x = 27,967.03

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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.