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Finding the Fourth Proportional to 12,266.55, 18,407.89 and 6,723.82

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Solution

The fourth proportional to 12,266.55, 18,407.89 and 6,723.82 is: 10,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,266.55 : 18,407.89 = 6,723.82 : x
  2. Step 2: Convert to fraction form
    12,266.55/18,407.89 = 6,723.82/x
  3. Step 3: Cross multiply
    12,266.55x = 18,407.89 × 6,723.82
  4. Step 4: Simplify right side
    12,266.55x = 123,771,213.28
  5. Step 5: Solve for x
    x = 123,771,213.28/12,266.55
  6. Step 6: Final answer
    x = 10,090.14

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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.