Home / 13,512.42-18,645.39-8,803.08

Finding the Fourth Proportional to 13,512.42, 18,645.39 and 8,803.08

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Solution

The fourth proportional to 13,512.42, 18,645.39 and 8,803.08 is: 12,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.42 : 18,645.39 = 8,803.08 : x
  2. Step 2: Convert to fraction form
    13,512.42/18,645.39 = 8,803.08/x
  3. Step 3: Cross multiply
    13,512.42x = 18,645.39 × 8,803.08
  4. Step 4: Simplify right side
    13,512.42x = 164,136,859.80
  5. Step 5: Solve for x
    x = 164,136,859.80/13,512.42
  6. Step 6: Final answer
    x = 12,147.11

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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.