Home / 13,991.54-20,986.62-5,225.77

Finding the Fourth Proportional to 13,991.54, 20,986.62 and 5,225.77

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Solution

The fourth proportional to 13,991.54, 20,986.62 and 5,225.77 is: 7,838.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.54 : 20,986.62 = 5,225.77 : x
  2. Step 2: Convert to fraction form
    13,991.54/20,986.62 = 5,225.77/x
  3. Step 3: Cross multiply
    13,991.54x = 20,986.62 × 5,225.77
  4. Step 4: Simplify right side
    13,991.54x = 109,671,152.48
  5. Step 5: Solve for x
    x = 109,671,152.48/13,991.54
  6. Step 6: Final answer
    x = 7,838.39

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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.