Home / 13,421.52-20,135.43-4,061.61

Finding the Fourth Proportional to 13,421.52, 20,135.43 and 4,061.61

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Solution

The fourth proportional to 13,421.52, 20,135.43 and 4,061.61 is: 6,093.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.52 : 20,135.43 = 4,061.61 : x
  2. Step 2: Convert to fraction form
    13,421.52/20,135.43 = 4,061.61/x
  3. Step 3: Cross multiply
    13,421.52x = 20,135.43 × 4,061.61
  4. Step 4: Simplify right side
    13,421.52x = 81,782,263.84
  5. Step 5: Solve for x
    x = 81,782,263.84/13,421.52
  6. Step 6: Final answer
    x = 6,093.37

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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.