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Finding the Fourth Proportional to 13,173.51, 18,179.18 and 7,205.16

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Solution

The fourth proportional to 13,173.51, 18,179.18 and 7,205.16 is: 9,942.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.51 : 18,179.18 = 7,205.16 : x
  2. Step 2: Convert to fraction form
    13,173.51/18,179.18 = 7,205.16/x
  3. Step 3: Cross multiply
    13,173.51x = 18,179.18 × 7,205.16
  4. Step 4: Simplify right side
    13,173.51x = 130,983,900.57
  5. Step 5: Solve for x
    x = 130,983,900.57/13,173.51
  6. Step 6: Final answer
    x = 9,942.98

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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.