Home / 12,383.88-18,571.20-4,985.84

Finding the Fourth Proportional to 12,383.88, 18,571.20 and 4,985.84

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Solution

The fourth proportional to 12,383.88, 18,571.20 and 4,985.84 is: 7,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.88 : 18,571.20 = 4,985.84 : x
  2. Step 2: Convert to fraction form
    12,383.88/18,571.20 = 4,985.84/x
  3. Step 3: Cross multiply
    12,383.88x = 18,571.20 × 4,985.84
  4. Step 4: Simplify right side
    12,383.88x = 92,593,031.81
  5. Step 5: Solve for x
    x = 92,593,031.81/12,383.88
  6. Step 6: Final answer
    x = 7,476.90

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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.