Home / 12,172.12-18,171.71-11,740.12

Finding the Fourth Proportional to 12,172.12, 18,171.71 and 11,740.12

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Solution

The fourth proportional to 12,172.12, 18,171.71 and 11,740.12 is: 17,526.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.12 : 18,171.71 = 11,740.12 : x
  2. Step 2: Convert to fraction form
    12,172.12/18,171.71 = 11,740.12/x
  3. Step 3: Cross multiply
    12,172.12x = 18,171.71 × 11,740.12
  4. Step 4: Simplify right side
    12,172.12x = 213,338,056.01
  5. Step 5: Solve for x
    x = 213,338,056.01/12,172.12
  6. Step 6: Final answer
    x = 17,526.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.