Home / 13,144.01-18,138.81-7,175.66

Finding the Fourth Proportional to 13,144.01, 18,138.81 and 7,175.66

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Solution

The fourth proportional to 13,144.01, 18,138.81 and 7,175.66 is: 9,902.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.01 : 18,138.81 = 7,175.66 : x
  2. Step 2: Convert to fraction form
    13,144.01/18,138.81 = 7,175.66/x
  3. Step 3: Cross multiply
    13,144.01x = 18,138.81 × 7,175.66
  4. Step 4: Simplify right side
    13,144.01x = 130,157,933.36
  5. Step 5: Solve for x
    x = 130,157,933.36/13,144.01
  6. Step 6: Final answer
    x = 9,902.45

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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.