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Finding the Fourth Proportional to 15,693.62, 21,674.18 and 9,739.49

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Solution

The fourth proportional to 15,693.62, 21,674.18 and 9,739.49 is: 13,451.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.62 : 21,674.18 = 9,739.49 : x
  2. Step 2: Convert to fraction form
    15,693.62/21,674.18 = 9,739.49/x
  3. Step 3: Cross multiply
    15,693.62x = 21,674.18 × 9,739.49
  4. Step 4: Simplify right side
    15,693.62x = 211,095,375.35
  5. Step 5: Solve for x
    x = 211,095,375.35/15,693.62
  6. Step 6: Final answer
    x = 13,451.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.