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Finding the Fourth Proportional to 12,963.09, 17,905.20 and 11,703.54

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Solution

The fourth proportional to 12,963.09, 17,905.20 and 11,703.54 is: 16,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,963.09 : 17,905.20 = 11,703.54 : x
  2. Step 2: Convert to fraction form
    12,963.09/17,905.20 = 11,703.54/x
  3. Step 3: Cross multiply
    12,963.09x = 17,905.20 × 11,703.54
  4. Step 4: Simplify right side
    12,963.09x = 209,554,224.41
  5. Step 5: Solve for x
    x = 209,554,224.41/12,963.09
  6. Step 6: Final answer
    x = 16,165.45

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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.