Home / 13,643.12-20,468.09-4,758.58

Finding the Fourth Proportional to 13,643.12, 20,468.09 and 4,758.58

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Solution

The fourth proportional to 13,643.12, 20,468.09 and 4,758.58 is: 7,139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.12 : 20,468.09 = 4,758.58 : x
  2. Step 2: Convert to fraction form
    13,643.12/20,468.09 = 4,758.58/x
  3. Step 3: Cross multiply
    13,643.12x = 20,468.09 × 4,758.58
  4. Step 4: Simplify right side
    13,643.12x = 97,399,103.73
  5. Step 5: Solve for x
    x = 97,399,103.73/13,643.12
  6. Step 6: Final answer
    x = 7,139.06

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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.