Home / 13,315.05-18,375.66-7,651.64

Finding the Fourth Proportional to 13,315.05, 18,375.66 and 7,651.64

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Solution

The fourth proportional to 13,315.05, 18,375.66 and 7,651.64 is: 10,559.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.05 : 18,375.66 = 7,651.64 : x
  2. Step 2: Convert to fraction form
    13,315.05/18,375.66 = 7,651.64/x
  3. Step 3: Cross multiply
    13,315.05x = 18,375.66 × 7,651.64
  4. Step 4: Simplify right side
    13,315.05x = 140,603,981.02
  5. Step 5: Solve for x
    x = 140,603,981.02/13,315.05
  6. Step 6: Final answer
    x = 10,559.78

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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.