Home / 13,429.10-20,131.30-7,193.38

Finding the Fourth Proportional to 13,429.10, 20,131.30 and 7,193.38

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Solution

The fourth proportional to 13,429.10, 20,131.30 and 7,193.38 is: 10,783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.10 : 20,131.30 = 7,193.38 : x
  2. Step 2: Convert to fraction form
    13,429.10/20,131.30 = 7,193.38/x
  3. Step 3: Cross multiply
    13,429.10x = 20,131.30 × 7,193.38
  4. Step 4: Simplify right side
    13,429.10x = 144,812,090.79
  5. Step 5: Solve for x
    x = 144,812,090.79/13,429.10
  6. Step 6: Final answer
    x = 10,783.45

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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.