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Finding the Fourth Proportional to 11,739.48, 17,609.48 and 4,720.20

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Solution

The fourth proportional to 11,739.48, 17,609.48 and 4,720.20 is: 7,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,739.48 : 17,609.48 = 4,720.20 : x
  2. Step 2: Convert to fraction form
    11,739.48/17,609.48 = 4,720.20/x
  3. Step 3: Cross multiply
    11,739.48x = 17,609.48 × 4,720.20
  4. Step 4: Simplify right side
    11,739.48x = 83,120,267.50
  5. Step 5: Solve for x
    x = 83,120,267.50/11,739.48
  6. Step 6: Final answer
    x = 7,080.40

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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.