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Finding the Fourth Proportional to 13,755.66, 20,661.93 and 11,126.10

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Solution

The fourth proportional to 13,755.66, 20,661.93 and 11,126.10 is: 16,712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.66 : 20,661.93 = 11,126.10 : x
  2. Step 2: Convert to fraction form
    13,755.66/20,661.93 = 11,126.10/x
  3. Step 3: Cross multiply
    13,755.66x = 20,661.93 × 11,126.10
  4. Step 4: Simplify right side
    13,755.66x = 229,886,699.37
  5. Step 5: Solve for x
    x = 229,886,699.37/13,755.66
  6. Step 6: Final answer
    x = 16,712.15

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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.