Home / 27,621.64-38,105.72-18,665.88

Finding the Fourth Proportional to 27,621.64, 38,105.72 and 18,665.88

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Solution

The fourth proportional to 27,621.64, 38,105.72 and 18,665.88 is: 25,750.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,621.64 : 38,105.72 = 18,665.88 : x
  2. Step 2: Convert to fraction form
    27,621.64/38,105.72 = 18,665.88/x
  3. Step 3: Cross multiply
    27,621.64x = 38,105.72 × 18,665.88
  4. Step 4: Simplify right side
    27,621.64x = 711,276,796.83
  5. Step 5: Solve for x
    x = 711,276,796.83/27,621.64
  6. Step 6: Final answer
    x = 25,750.71

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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.