Home / 11,405.10-17,116.34-9,189.35

Finding the Fourth Proportional to 11,405.10, 17,116.34 and 9,189.35

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Solution

The fourth proportional to 11,405.10, 17,116.34 and 9,189.35 is: 13,791.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.10 : 17,116.34 = 9,189.35 : x
  2. Step 2: Convert to fraction form
    11,405.10/17,116.34 = 9,189.35/x
  3. Step 3: Cross multiply
    11,405.10x = 17,116.34 × 9,189.35
  4. Step 4: Simplify right side
    11,405.10x = 157,287,907.45
  5. Step 5: Solve for x
    x = 157,287,907.45/11,405.10
  6. Step 6: Final answer
    x = 13,791.02

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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.