Home / 12,118.03-18,172.38-4,721.51

Finding the Fourth Proportional to 12,118.03, 18,172.38 and 4,721.51

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Solution

The fourth proportional to 12,118.03, 18,172.38 and 4,721.51 is: 7,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.03 : 18,172.38 = 4,721.51 : x
  2. Step 2: Convert to fraction form
    12,118.03/18,172.38 = 4,721.51/x
  3. Step 3: Cross multiply
    12,118.03x = 18,172.38 × 4,721.51
  4. Step 4: Simplify right side
    12,118.03x = 85,801,119.32
  5. Step 5: Solve for x
    x = 85,801,119.32/12,118.03
  6. Step 6: Final answer
    x = 7,080.45

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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.