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Finding the Fourth Proportional to 11,720.52, 17,568.63 and 7,327.89

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Solution

The fourth proportional to 11,720.52, 17,568.63 and 7,327.89 is: 10,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.52 : 17,568.63 = 7,327.89 : x
  2. Step 2: Convert to fraction form
    11,720.52/17,568.63 = 7,327.89/x
  3. Step 3: Cross multiply
    11,720.52x = 17,568.63 × 7,327.89
  4. Step 4: Simplify right side
    11,720.52x = 128,740,988.09
  5. Step 5: Solve for x
    x = 128,740,988.09/11,720.52
  6. Step 6: Final answer
    x = 10,984.24

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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.