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Finding the Fourth Proportional to 27,309.72, 40,965.12 and 11,727.48

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Solution

The fourth proportional to 27,309.72, 40,965.12 and 11,727.48 is: 17,591.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,309.72 : 40,965.12 = 11,727.48 : x
  2. Step 2: Convert to fraction form
    27,309.72/40,965.12 = 11,727.48/x
  3. Step 3: Cross multiply
    27,309.72x = 40,965.12 × 11,727.48
  4. Step 4: Simplify right side
    27,309.72x = 480,417,625.50
  5. Step 5: Solve for x
    x = 480,417,625.50/27,309.72
  6. Step 6: Final answer
    x = 17,591.45

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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.