Home / 13,137.14-19,707-4,372.70

Finding the Fourth Proportional to 13,137.14, 19,707 and 4,372.70

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Solution

The fourth proportional to 13,137.14, 19,707 and 4,372.70 is: 6,559.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.14 : 19,707 = 4,372.70 : x
  2. Step 2: Convert to fraction form
    13,137.14/19,707 = 4,372.70/x
  3. Step 3: Cross multiply
    13,137.14x = 19,707 × 4,372.70
  4. Step 4: Simplify right side
    13,137.14x = 86,172,798.90
  5. Step 5: Solve for x
    x = 86,172,798.90/13,137.14
  6. Step 6: Final answer
    x = 6,559.48

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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.