Home / 13,170.51-18,175.10-7,202.16

Finding the Fourth Proportional to 13,170.51, 18,175.10 and 7,202.16

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Solution

The fourth proportional to 13,170.51, 18,175.10 and 7,202.16 is: 9,938.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.51 : 18,175.10 = 7,202.16 : x
  2. Step 2: Convert to fraction form
    13,170.51/18,175.10 = 7,202.16/x
  3. Step 3: Cross multiply
    13,170.51x = 18,175.10 × 7,202.16
  4. Step 4: Simplify right side
    13,170.51x = 130,899,942.21
  5. Step 5: Solve for x
    x = 130,899,942.21/13,170.51
  6. Step 6: Final answer
    x = 9,938.87

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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.