Home / 18,276.03-25,220.57-11,988

Finding the Fourth Proportional to 18,276.03, 25,220.57 and 11,988

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Solution

The fourth proportional to 18,276.03, 25,220.57 and 11,988 is: 16,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.03 : 25,220.57 = 11,988 : x
  2. Step 2: Convert to fraction form
    18,276.03/25,220.57 = 11,988/x
  3. Step 3: Cross multiply
    18,276.03x = 25,220.57 × 11,988
  4. Step 4: Simplify right side
    18,276.03x = 302,344,133.22
  5. Step 5: Solve for x
    x = 302,344,133.22/18,276.03
  6. Step 6: Final answer
    x = 16,543.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.