Home / 27,826.56-38,380.32-20,275.20

Finding the Fourth Proportional to 27,826.56, 38,380.32 and 20,275.20

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Solution

The fourth proportional to 27,826.56, 38,380.32 and 20,275.20 is: 27,964.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,826.56 : 38,380.32 = 20,275.20 : x
  2. Step 2: Convert to fraction form
    27,826.56/38,380.32 = 20,275.20/x
  3. Step 3: Cross multiply
    27,826.56x = 38,380.32 × 20,275.20
  4. Step 4: Simplify right side
    27,826.56x = 778,168,664.06
  5. Step 5: Solve for x
    x = 778,168,664.06/27,826.56
  6. Step 6: Final answer
    x = 27,964.96

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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.