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Finding the Fourth Proportional to 18,973.32, 26,183.16 and 11,015.88

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Solution

The fourth proportional to 18,973.32, 26,183.16 and 11,015.88 is: 15,201.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.32 : 26,183.16 = 11,015.88 : x
  2. Step 2: Convert to fraction form
    18,973.32/26,183.16 = 11,015.88/x
  3. Step 3: Cross multiply
    18,973.32x = 26,183.16 × 11,015.88
  4. Step 4: Simplify right side
    18,973.32x = 288,430,548.58
  5. Step 5: Solve for x
    x = 288,430,548.58/18,973.32
  6. Step 6: Final answer
    x = 15,201.90

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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.