Home / 13,402-20,100.26-5,079.15

Finding the Fourth Proportional to 13,402, 20,100.26 and 5,079.15

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Solution

The fourth proportional to 13,402, 20,100.26 and 5,079.15 is: 7,617.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402 : 20,100.26 = 5,079.15 : x
  2. Step 2: Convert to fraction form
    13,402/20,100.26 = 5,079.15/x
  3. Step 3: Cross multiply
    13,402x = 20,100.26 × 5,079.15
  4. Step 4: Simplify right side
    13,402x = 102,092,235.58
  5. Step 5: Solve for x
    x = 102,092,235.58/13,402
  6. Step 6: Final answer
    x = 7,617.69

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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.