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Finding the Fourth Proportional to 13,101.29, 18,080.01 and 7,133.06

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Solution

The fourth proportional to 13,101.29, 18,080.01 and 7,133.06 is: 9,843.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.29 : 18,080.01 = 7,133.06 : x
  2. Step 2: Convert to fraction form
    13,101.29/18,080.01 = 7,133.06/x
  3. Step 3: Cross multiply
    13,101.29x = 18,080.01 × 7,133.06
  4. Step 4: Simplify right side
    13,101.29x = 128,965,705.73
  5. Step 5: Solve for x
    x = 128,965,705.73/13,101.29
  6. Step 6: Final answer
    x = 9,843.74

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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.