Home / 13,485.68-18,685.66-13,179.50

Finding the Fourth Proportional to 13,485.68, 18,685.66 and 13,179.50

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Solution

The fourth proportional to 13,485.68, 18,685.66 and 13,179.50 is: 18,261.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.68 : 18,685.66 = 13,179.50 : x
  2. Step 2: Convert to fraction form
    13,485.68/18,685.66 = 13,179.50/x
  3. Step 3: Cross multiply
    13,485.68x = 18,685.66 × 13,179.50
  4. Step 4: Simplify right side
    13,485.68x = 246,267,655.97
  5. Step 5: Solve for x
    x = 246,267,655.97/13,485.68
  6. Step 6: Final answer
    x = 18,261.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.