Home / 13,630.14-18,816.71-9,177.37

Finding the Fourth Proportional to 13,630.14, 18,816.71 and 9,177.37

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Solution

The fourth proportional to 13,630.14, 18,816.71 and 9,177.37 is: 12,669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.14 : 18,816.71 = 9,177.37 : x
  2. Step 2: Convert to fraction form
    13,630.14/18,816.71 = 9,177.37/x
  3. Step 3: Cross multiply
    13,630.14x = 18,816.71 × 9,177.37
  4. Step 4: Simplify right side
    13,630.14x = 172,687,816.92
  5. Step 5: Solve for x
    x = 172,687,816.92/13,630.14
  6. Step 6: Final answer
    x = 12,669.56

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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.