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Finding the Fourth Proportional to 12,674.60, 17,489.06 and 7,637.80

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Solution

The fourth proportional to 12,674.60, 17,489.06 and 7,637.80 is: 10,539.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.60 : 17,489.06 = 7,637.80 : x
  2. Step 2: Convert to fraction form
    12,674.60/17,489.06 = 7,637.80/x
  3. Step 3: Cross multiply
    12,674.60x = 17,489.06 × 7,637.80
  4. Step 4: Simplify right side
    12,674.60x = 133,577,942.47
  5. Step 5: Solve for x
    x = 133,577,942.47/12,674.60
  6. Step 6: Final answer
    x = 10,539.03

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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.