Home / 13,100.36-18,047.76-9,114.62

Finding the Fourth Proportional to 13,100.36, 18,047.76 and 9,114.62

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Solution

The fourth proportional to 13,100.36, 18,047.76 and 9,114.62 is: 12,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,100.36 : 18,047.76 = 9,114.62 : x
  2. Step 2: Convert to fraction form
    13,100.36/18,047.76 = 9,114.62/x
  3. Step 3: Cross multiply
    13,100.36x = 18,047.76 × 9,114.62
  4. Step 4: Simplify right side
    13,100.36x = 164,498,474.25
  5. Step 5: Solve for x
    x = 164,498,474.25/13,100.36
  6. Step 6: Final answer
    x = 12,556.79

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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.