Home / 18,943.24-28,415-8,410.43

Finding the Fourth Proportional to 18,943.24, 28,415 and 8,410.43

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Solution

The fourth proportional to 18,943.24, 28,415 and 8,410.43 is: 12,615.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.24 : 28,415 = 8,410.43 : x
  2. Step 2: Convert to fraction form
    18,943.24/28,415 = 8,410.43/x
  3. Step 3: Cross multiply
    18,943.24x = 28,415 × 8,410.43
  4. Step 4: Simplify right side
    18,943.24x = 238,982,368.45
  5. Step 5: Solve for x
    x = 238,982,368.45/18,943.24
  6. Step 6: Final answer
    x = 12,615.71

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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.