Home / 12,284.95-18,427.35-3,519.88

Finding the Fourth Proportional to 12,284.95, 18,427.35 and 3,519.88

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Solution

The fourth proportional to 12,284.95, 18,427.35 and 3,519.88 is: 5,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,284.95 : 18,427.35 = 3,519.88 : x
  2. Step 2: Convert to fraction form
    12,284.95/18,427.35 = 3,519.88/x
  3. Step 3: Cross multiply
    12,284.95x = 18,427.35 × 3,519.88
  4. Step 4: Simplify right side
    12,284.95x = 64,862,060.72
  5. Step 5: Solve for x
    x = 64,862,060.72/12,284.95
  6. Step 6: Final answer
    x = 5,279.80

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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.