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Finding the Fourth Proportional to 19,941.78, 29,912.64 and 6,090.78

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Solution

The fourth proportional to 19,941.78, 29,912.64 and 6,090.78 is: 9,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,941.78 : 29,912.64 = 6,090.78 : x
  2. Step 2: Convert to fraction form
    19,941.78/29,912.64 = 6,090.78/x
  3. Step 3: Cross multiply
    19,941.78x = 29,912.64 × 6,090.78
  4. Step 4: Simplify right side
    19,941.78x = 182,191,309.46
  5. Step 5: Solve for x
    x = 182,191,309.46/19,941.78
  6. Step 6: Final answer
    x = 9,136.16

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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.