Home / 13,758.82-20,638.09-4,398.73

Finding the Fourth Proportional to 13,758.82, 20,638.09 and 4,398.73

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Solution

The fourth proportional to 13,758.82, 20,638.09 and 4,398.73 is: 6,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.82 : 20,638.09 = 4,398.73 : x
  2. Step 2: Convert to fraction form
    13,758.82/20,638.09 = 4,398.73/x
  3. Step 3: Cross multiply
    13,758.82x = 20,638.09 × 4,398.73
  4. Step 4: Simplify right side
    13,758.82x = 90,781,339.53
  5. Step 5: Solve for x
    x = 90,781,339.53/13,758.82
  6. Step 6: Final answer
    x = 6,598.05

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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.