Home / 11,937.21-17,904.40-3,172.80

Finding the Fourth Proportional to 11,937.21, 17,904.40 and 3,172.80

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Solution

The fourth proportional to 11,937.21, 17,904.40 and 3,172.80 is: 4,758.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,937.21 : 17,904.40 = 3,172.80 : x
  2. Step 2: Convert to fraction form
    11,937.21/17,904.40 = 3,172.80/x
  3. Step 3: Cross multiply
    11,937.21x = 17,904.40 × 3,172.80
  4. Step 4: Simplify right side
    11,937.21x = 56,807,080.32
  5. Step 5: Solve for x
    x = 56,807,080.32/11,937.21
  6. Step 6: Final answer
    x = 4,758.82

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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.