Home / 13,429.31-20,142.59-3,569.58

Finding the Fourth Proportional to 13,429.31, 20,142.59 and 3,569.58

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Solution

The fourth proportional to 13,429.31, 20,142.59 and 3,569.58 is: 5,354.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.31 : 20,142.59 = 3,569.58 : x
  2. Step 2: Convert to fraction form
    13,429.31/20,142.59 = 3,569.58/x
  3. Step 3: Cross multiply
    13,429.31x = 20,142.59 × 3,569.58
  4. Step 4: Simplify right side
    13,429.31x = 71,900,568.56
  5. Step 5: Solve for x
    x = 71,900,568.56/13,429.31
  6. Step 6: Final answer
    x = 5,354.01

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1.5x scale

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.