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Finding the Fourth Proportional to 11,739.46, 17,609.46 and 4,720.18

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Solution

The fourth proportional to 11,739.46, 17,609.46 and 4,720.18 is: 7,080.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,739.46 : 17,609.46 = 4,720.18 : x
  2. Step 2: Convert to fraction form
    11,739.46/17,609.46 = 4,720.18/x
  3. Step 3: Cross multiply
    11,739.46x = 17,609.46 × 4,720.18
  4. Step 4: Simplify right side
    11,739.46x = 83,119,820.90
  5. Step 5: Solve for x
    x = 83,119,820.90/11,739.46
  6. Step 6: Final answer
    x = 7,080.38

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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.