Home / 13,451.53-18,560.05-8,145.22

Finding the Fourth Proportional to 13,451.53, 18,560.05 and 8,145.22

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Solution

The fourth proportional to 13,451.53, 18,560.05 and 8,145.22 is: 11,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.53 : 18,560.05 = 8,145.22 : x
  2. Step 2: Convert to fraction form
    13,451.53/18,560.05 = 8,145.22/x
  3. Step 3: Cross multiply
    13,451.53x = 18,560.05 × 8,145.22
  4. Step 4: Simplify right side
    13,451.53x = 151,175,690.46
  5. Step 5: Solve for x
    x = 151,175,690.46/13,451.53
  6. Step 6: Final answer
    x = 11,238.55

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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.