Home / 13,661.35-18,850.69-7,611.55

Finding the Fourth Proportional to 13,661.35, 18,850.69 and 7,611.55

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Solution

The fourth proportional to 13,661.35, 18,850.69 and 7,611.55 is: 10,502.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.35 : 18,850.69 = 7,611.55 : x
  2. Step 2: Convert to fraction form
    13,661.35/18,850.69 = 7,611.55/x
  3. Step 3: Cross multiply
    13,661.35x = 18,850.69 × 7,611.55
  4. Step 4: Simplify right side
    13,661.35x = 143,482,969.47
  5. Step 5: Solve for x
    x = 143,482,969.47/13,661.35
  6. Step 6: Final answer
    x = 10,502.84

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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.