Home / 13,429.31-20,142.36-3,569.35

Finding the Fourth Proportional to 13,429.31, 20,142.36 and 3,569.35

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Solution

The fourth proportional to 13,429.31, 20,142.36 and 3,569.35 is: 5,353.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.31 : 20,142.36 = 3,569.35 : x
  2. Step 2: Convert to fraction form
    13,429.31/20,142.36 = 3,569.35/x
  3. Step 3: Cross multiply
    13,429.31x = 20,142.36 × 3,569.35
  4. Step 4: Simplify right side
    13,429.31x = 71,895,031.95
  5. Step 5: Solve for x
    x = 71,895,031.95/13,429.31
  6. Step 6: Final answer
    x = 5,353.59

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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.