Home / 12,790.72-19,184.64-3,557.44

Finding the Fourth Proportional to 12,790.72, 19,184.64 and 3,557.44

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Solution

The fourth proportional to 12,790.72, 19,184.64 and 3,557.44 is: 5,335.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.72 : 19,184.64 = 3,557.44 : x
  2. Step 2: Convert to fraction form
    12,790.72/19,184.64 = 3,557.44/x
  3. Step 3: Cross multiply
    12,790.72x = 19,184.64 × 3,557.44
  4. Step 4: Simplify right side
    12,790.72x = 68,248,205.72
  5. Step 5: Solve for x
    x = 68,248,205.72/12,790.72
  6. Step 6: Final answer
    x = 5,335.76

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1.5x scale

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.