Home / 18,836.10-28,258.25-8,961.80

Finding the Fourth Proportional to 18,836.10, 28,258.25 and 8,961.80

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Solution

The fourth proportional to 18,836.10, 28,258.25 and 8,961.80 is: 13,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.10 : 28,258.25 = 8,961.80 : x
  2. Step 2: Convert to fraction form
    18,836.10/28,258.25 = 8,961.80/x
  3. Step 3: Cross multiply
    18,836.10x = 28,258.25 × 8,961.80
  4. Step 4: Simplify right side
    18,836.10x = 253,244,598.75
  5. Step 5: Solve for x
    x = 253,244,598.75/18,836.10
  6. Step 6: Final answer
    x = 13,444.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.