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Finding the Fourth Proportional to 11,647.80, 17,468.36 and 5,721.03

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Solution

The fourth proportional to 11,647.80, 17,468.36 and 5,721.03 is: 8,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,647.80 : 17,468.36 = 5,721.03 : x
  2. Step 2: Convert to fraction form
    11,647.80/17,468.36 = 5,721.03/x
  3. Step 3: Cross multiply
    11,647.80x = 17,468.36 × 5,721.03
  4. Step 4: Simplify right side
    11,647.80x = 99,937,004.46
  5. Step 5: Solve for x
    x = 99,937,004.46/11,647.80
  6. Step 6: Final answer
    x = 8,579.90

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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.