Home / 13,821.86-20,728.69-5,054.74

Finding the Fourth Proportional to 13,821.86, 20,728.69 and 5,054.74

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Solution

The fourth proportional to 13,821.86, 20,728.69 and 5,054.74 is: 7,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.86 : 20,728.69 = 5,054.74 : x
  2. Step 2: Convert to fraction form
    13,821.86/20,728.69 = 5,054.74/x
  3. Step 3: Cross multiply
    13,821.86x = 20,728.69 × 5,054.74
  4. Step 4: Simplify right side
    13,821.86x = 104,778,074.03
  5. Step 5: Solve for x
    x = 104,778,074.03/13,821.86
  6. Step 6: Final answer
    x = 7,580.60

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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.