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Finding the Fourth Proportional to 21,751.77, 32,615.09 and 11,607.64

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Solution

The fourth proportional to 21,751.77, 32,615.09 and 11,607.64 is: 17,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.77 : 32,615.09 = 11,607.64 : x
  2. Step 2: Convert to fraction form
    21,751.77/32,615.09 = 11,607.64/x
  3. Step 3: Cross multiply
    21,751.77x = 32,615.09 × 11,607.64
  4. Step 4: Simplify right side
    21,751.77x = 378,584,127.24
  5. Step 5: Solve for x
    x = 378,584,127.24/21,751.77
  6. Step 6: Final answer
    x = 17,404.75

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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.