Home / 13,451.94-20,178.45-4,687.74

Finding the Fourth Proportional to 13,451.94, 20,178.45 and 4,687.74

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Solution

The fourth proportional to 13,451.94, 20,178.45 and 4,687.74 is: 7,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.94 : 20,178.45 = 4,687.74 : x
  2. Step 2: Convert to fraction form
    13,451.94/20,178.45 = 4,687.74/x
  3. Step 3: Cross multiply
    13,451.94x = 20,178.45 × 4,687.74
  4. Step 4: Simplify right side
    13,451.94x = 94,591,327.20
  5. Step 5: Solve for x
    x = 94,591,327.20/13,451.94
  6. Step 6: Final answer
    x = 7,031.80

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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.