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Finding the Fourth Proportional to 11,708.01, 17,572.95 and 8,405.64

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Solution

The fourth proportional to 11,708.01, 17,572.95 and 8,405.64 is: 12,616.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,708.01 : 17,572.95 = 8,405.64 : x
  2. Step 2: Convert to fraction form
    11,708.01/17,572.95 = 8,405.64/x
  3. Step 3: Cross multiply
    11,708.01x = 17,572.95 × 8,405.64
  4. Step 4: Simplify right side
    11,708.01x = 147,711,891.44
  5. Step 5: Solve for x
    x = 147,711,891.44/11,708.01
  6. Step 6: Final answer
    x = 12,616.31

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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.