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Finding the Fourth Proportional to 11,485.16, 17,213.04 and 9,998.30

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Solution

The fourth proportional to 11,485.16, 17,213.04 and 9,998.30 is: 14,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.16 : 17,213.04 = 9,998.30 : x
  2. Step 2: Convert to fraction form
    11,485.16/17,213.04 = 9,998.30/x
  3. Step 3: Cross multiply
    11,485.16x = 17,213.04 × 9,998.30
  4. Step 4: Simplify right side
    11,485.16x = 172,101,137.83
  5. Step 5: Solve for x
    x = 172,101,137.83/11,485.16
  6. Step 6: Final answer
    x = 14,984.65

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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.