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Finding the Fourth Proportional to 30,259.92, 45,389.64 and 11,791.92

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Solution

The fourth proportional to 30,259.92, 45,389.64 and 11,791.92 is: 17,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,259.92 : 45,389.64 = 11,791.92 : x
  2. Step 2: Convert to fraction form
    30,259.92/45,389.64 = 11,791.92/x
  3. Step 3: Cross multiply
    30,259.92x = 45,389.64 × 11,791.92
  4. Step 4: Simplify right side
    30,259.92x = 535,231,003.71
  5. Step 5: Solve for x
    x = 535,231,003.71/30,259.92
  6. Step 6: Final answer
    x = 17,687.79

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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.