Home / 12,742.88-19,113.36-3,977.52

Finding the Fourth Proportional to 12,742.88, 19,113.36 and 3,977.52

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Solution

The fourth proportional to 12,742.88, 19,113.36 and 3,977.52 is: 5,965.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.88 : 19,113.36 = 3,977.52 : x
  2. Step 2: Convert to fraction form
    12,742.88/19,113.36 = 3,977.52/x
  3. Step 3: Cross multiply
    12,742.88x = 19,113.36 × 3,977.52
  4. Step 4: Simplify right side
    12,742.88x = 76,023,771.67
  5. Step 5: Solve for x
    x = 76,023,771.67/12,742.88
  6. Step 6: Final answer
    x = 5,965.98

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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.