Home / 18,621.81-27,941.49-7,536.15

Finding the Fourth Proportional to 18,621.81, 27,941.49 and 7,536.15

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Solution

The fourth proportional to 18,621.81, 27,941.49 and 7,536.15 is: 11,307.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.81 : 27,941.49 = 7,536.15 : x
  2. Step 2: Convert to fraction form
    18,621.81/27,941.49 = 7,536.15/x
  3. Step 3: Cross multiply
    18,621.81x = 27,941.49 × 7,536.15
  4. Step 4: Simplify right side
    18,621.81x = 210,571,259.86
  5. Step 5: Solve for x
    x = 210,571,259.86/18,621.81
  6. Step 6: Final answer
    x = 11,307.78

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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.