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Finding the Fourth Proportional to 11,466.80, 17,185.60 and 9,979.84

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Solution

The fourth proportional to 11,466.80, 17,185.60 and 9,979.84 is: 14,957.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,466.80 : 17,185.60 = 9,979.84 : x
  2. Step 2: Convert to fraction form
    11,466.80/17,185.60 = 9,979.84/x
  3. Step 3: Cross multiply
    11,466.80x = 17,185.60 × 9,979.84
  4. Step 4: Simplify right side
    11,466.80x = 171,509,538.30
  5. Step 5: Solve for x
    x = 171,509,538.30/11,466.80
  6. Step 6: Final answer
    x = 14,957.05

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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.