Home / 12,531.61-18,799.58-4,212.43

Finding the Fourth Proportional to 12,531.61, 18,799.58 and 4,212.43

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Solution

The fourth proportional to 12,531.61, 18,799.58 and 4,212.43 is: 6,319.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.61 : 18,799.58 = 4,212.43 : x
  2. Step 2: Convert to fraction form
    12,531.61/18,799.58 = 4,212.43/x
  3. Step 3: Cross multiply
    12,531.61x = 18,799.58 × 4,212.43
  4. Step 4: Simplify right side
    12,531.61x = 79,191,893.72
  5. Step 5: Solve for x
    x = 79,191,893.72/12,531.61
  6. Step 6: Final answer
    x = 6,319.37

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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.