Home / 19,178.10-28,761.48-8,642.03

Finding the Fourth Proportional to 19,178.10, 28,761.48 and 8,642.03

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Solution

The fourth proportional to 19,178.10, 28,761.48 and 8,642.03 is: 12,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178.10 : 28,761.48 = 8,642.03 : x
  2. Step 2: Convert to fraction form
    19,178.10/28,761.48 = 8,642.03/x
  3. Step 3: Cross multiply
    19,178.10x = 28,761.48 × 8,642.03
  4. Step 4: Simplify right side
    19,178.10x = 248,557,429.20
  5. Step 5: Solve for x
    x = 248,557,429.20/19,178.10
  6. Step 6: Final answer
    x = 12,960.48

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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.