Home / 13,677.30-20,503.80-4,909.86

Finding the Fourth Proportional to 13,677.30, 20,503.80 and 4,909.86

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Solution

The fourth proportional to 13,677.30, 20,503.80 and 4,909.86 is: 7,360.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.30 : 20,503.80 = 4,909.86 : x
  2. Step 2: Convert to fraction form
    13,677.30/20,503.80 = 4,909.86/x
  3. Step 3: Cross multiply
    13,677.30x = 20,503.80 × 4,909.86
  4. Step 4: Simplify right side
    13,677.30x = 100,670,787.47
  5. Step 5: Solve for x
    x = 100,670,787.47/13,677.30
  6. Step 6: Final answer
    x = 7,360.43

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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.