Home / 13,177.76-18,185.36-7,209.48

Finding the Fourth Proportional to 13,177.76, 18,185.36 and 7,209.48

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Solution

The fourth proportional to 13,177.76, 18,185.36 and 7,209.48 is: 9,949.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.76 : 18,185.36 = 7,209.48 : x
  2. Step 2: Convert to fraction form
    13,177.76/18,185.36 = 7,209.48/x
  3. Step 3: Cross multiply
    13,177.76x = 18,185.36 × 7,209.48
  4. Step 4: Simplify right side
    13,177.76x = 131,106,989.21
  5. Step 5: Solve for x
    x = 131,106,989.21/13,177.76
  6. Step 6: Final answer
    x = 9,949.11

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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.