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Finding the Fourth Proportional to 13,080.56, 18,051.24 and 7,112.24

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Solution

The fourth proportional to 13,080.56, 18,051.24 and 7,112.24 is: 9,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.56 : 18,051.24 = 7,112.24 : x
  2. Step 2: Convert to fraction form
    13,080.56/18,051.24 = 7,112.24/x
  3. Step 3: Cross multiply
    13,080.56x = 18,051.24 × 7,112.24
  4. Step 4: Simplify right side
    13,080.56x = 128,384,751.18
  5. Step 5: Solve for x
    x = 128,384,751.18/13,080.56
  6. Step 6: Final answer
    x = 9,814.93

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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.