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Finding the Fourth Proportional to 19,963.64, 27,550 and 11,011.45

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Solution

The fourth proportional to 19,963.64, 27,550 and 11,011.45 is: 15,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.64 : 27,550 = 11,011.45 : x
  2. Step 2: Convert to fraction form
    19,963.64/27,550 = 11,011.45/x
  3. Step 3: Cross multiply
    19,963.64x = 27,550 × 11,011.45
  4. Step 4: Simplify right side
    19,963.64x = 303,365,447.50
  5. Step 5: Solve for x
    x = 303,365,447.50/19,963.64
  6. Step 6: Final answer
    x = 15,195.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.