Home / 13,215.19-19,822.82-3,354.46

Finding the Fourth Proportional to 13,215.19, 19,822.82 and 3,354.46

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Solution

The fourth proportional to 13,215.19, 19,822.82 and 3,354.46 is: 5,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.19 : 19,822.82 = 3,354.46 : x
  2. Step 2: Convert to fraction form
    13,215.19/19,822.82 = 3,354.46/x
  3. Step 3: Cross multiply
    13,215.19x = 19,822.82 × 3,354.46
  4. Step 4: Simplify right side
    13,215.19x = 66,494,856.78
  5. Step 5: Solve for x
    x = 66,494,856.78/13,215.19
  6. Step 6: Final answer
    x = 5,031.70

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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.