Home / 13,390.59-20,081.27-5,072.99

Finding the Fourth Proportional to 13,390.59, 20,081.27 and 5,072.99

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Solution

The fourth proportional to 13,390.59, 20,081.27 and 5,072.99 is: 7,607.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.59 : 20,081.27 = 5,072.99 : x
  2. Step 2: Convert to fraction form
    13,390.59/20,081.27 = 5,072.99/x
  3. Step 3: Cross multiply
    13,390.59x = 20,081.27 × 5,072.99
  4. Step 4: Simplify right side
    13,390.59x = 101,872,011.86
  5. Step 5: Solve for x
    x = 101,872,011.86/13,390.59
  6. Step 6: Final answer
    x = 7,607.73

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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.