Home / 9,189.64-13,779.25-8,405.97

Finding the Fourth Proportional to 9,189.64, 13,779.25 and 8,405.97

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Solution

The fourth proportional to 9,189.64, 13,779.25 and 8,405.97 is: 12,604.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.64 : 13,779.25 = 8,405.97 : x
  2. Step 2: Convert to fraction form
    9,189.64/13,779.25 = 8,405.97/x
  3. Step 3: Cross multiply
    9,189.64x = 13,779.25 × 8,405.97
  4. Step 4: Simplify right side
    9,189.64x = 115,827,889.44
  5. Step 5: Solve for x
    x = 115,827,889.44/9,189.64
  6. Step 6: Final answer
    x = 12,604.18

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1.5x scale

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.