Home / 12,278.66-18,405.65-3,952.55

Finding the Fourth Proportional to 12,278.66, 18,405.65 and 3,952.55

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Solution

The fourth proportional to 12,278.66, 18,405.65 and 3,952.55 is: 5,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.66 : 18,405.65 = 3,952.55 : x
  2. Step 2: Convert to fraction form
    12,278.66/18,405.65 = 3,952.55/x
  3. Step 3: Cross multiply
    12,278.66x = 18,405.65 × 3,952.55
  4. Step 4: Simplify right side
    12,278.66x = 72,749,307.80
  5. Step 5: Solve for x
    x = 72,749,307.80/12,278.66
  6. Step 6: Final answer
    x = 5,924.86

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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.