Home / 12,087.80-18,114.70-9,611.64

Finding the Fourth Proportional to 12,087.80, 18,114.70 and 9,611.64

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Solution

The fourth proportional to 12,087.80, 18,114.70 and 9,611.64 is: 14,403.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.80 : 18,114.70 = 9,611.64 : x
  2. Step 2: Convert to fraction form
    12,087.80/18,114.70 = 9,611.64/x
  3. Step 3: Cross multiply
    12,087.80x = 18,114.70 × 9,611.64
  4. Step 4: Simplify right side
    12,087.80x = 174,111,975.11
  5. Step 5: Solve for x
    x = 174,111,975.11/12,087.80
  6. Step 6: Final answer
    x = 14,403.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.