Home / 13,265.85-19,895.12-3,905.49

Finding the Fourth Proportional to 13,265.85, 19,895.12 and 3,905.49

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Solution

The fourth proportional to 13,265.85, 19,895.12 and 3,905.49 is: 5,857.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,265.85 : 19,895.12 = 3,905.49 : x
  2. Step 2: Convert to fraction form
    13,265.85/19,895.12 = 3,905.49/x
  3. Step 3: Cross multiply
    13,265.85x = 19,895.12 × 3,905.49
  4. Step 4: Simplify right side
    13,265.85x = 77,700,102.50
  5. Step 5: Solve for x
    x = 77,700,102.50/13,265.85
  6. Step 6: Final answer
    x = 5,857.15

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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.