Home / 20,258.55-27,955.53-11,183.31

Finding the Fourth Proportional to 20,258.55, 27,955.53 and 11,183.31

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Solution

The fourth proportional to 20,258.55, 27,955.53 and 11,183.31 is: 15,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.55 : 27,955.53 = 11,183.31 : x
  2. Step 2: Convert to fraction form
    20,258.55/27,955.53 = 11,183.31/x
  3. Step 3: Cross multiply
    20,258.55x = 27,955.53 × 11,183.31
  4. Step 4: Simplify right side
    20,258.55x = 312,635,358.20
  5. Step 5: Solve for x
    x = 312,635,358.20/20,258.55
  6. Step 6: Final answer
    x = 15,432.27

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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.