Home / 13,406.33-18,500.38-7,356.55

Finding the Fourth Proportional to 13,406.33, 18,500.38 and 7,356.55

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Solution

The fourth proportional to 13,406.33, 18,500.38 and 7,356.55 is: 10,151.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.33 : 18,500.38 = 7,356.55 : x
  2. Step 2: Convert to fraction form
    13,406.33/18,500.38 = 7,356.55/x
  3. Step 3: Cross multiply
    13,406.33x = 18,500.38 × 7,356.55
  4. Step 4: Simplify right side
    13,406.33x = 136,099,067.45
  5. Step 5: Solve for x
    x = 136,099,067.45/13,406.33
  6. Step 6: Final answer
    x = 10,151.85

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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.