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Finding the Fourth Proportional to 12,662.93, 18,988.62 and 5,262.98

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Solution

The fourth proportional to 12,662.93, 18,988.62 and 5,262.98 is: 7,892.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.93 : 18,988.62 = 5,262.98 : x
  2. Step 2: Convert to fraction form
    12,662.93/18,988.62 = 5,262.98/x
  3. Step 3: Cross multiply
    12,662.93x = 18,988.62 × 5,262.98
  4. Step 4: Simplify right side
    12,662.93x = 99,936,727.29
  5. Step 5: Solve for x
    x = 99,936,727.29/12,662.93
  6. Step 6: Final answer
    x = 7,892.07

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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.