Home / 13,146.36-18,142.22-7,178.26

Finding the Fourth Proportional to 13,146.36, 18,142.22 and 7,178.26

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Solution

The fourth proportional to 13,146.36, 18,142.22 and 7,178.26 is: 9,906.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.36 : 18,142.22 = 7,178.26 : x
  2. Step 2: Convert to fraction form
    13,146.36/18,142.22 = 7,178.26/x
  3. Step 3: Cross multiply
    13,146.36x = 18,142.22 × 7,178.26
  4. Step 4: Simplify right side
    13,146.36x = 130,229,590.08
  5. Step 5: Solve for x
    x = 130,229,590.08/13,146.36
  6. Step 6: Final answer
    x = 9,906.14

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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.