Home / 13,776.86-20,663.19-4,415.89

Finding the Fourth Proportional to 13,776.86, 20,663.19 and 4,415.89

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Solution

The fourth proportional to 13,776.86, 20,663.19 and 4,415.89 is: 6,623.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.86 : 20,663.19 = 4,415.89 : x
  2. Step 2: Convert to fraction form
    13,776.86/20,663.19 = 4,415.89/x
  3. Step 3: Cross multiply
    13,776.86x = 20,663.19 × 4,415.89
  4. Step 4: Simplify right side
    13,776.86x = 91,246,374.09
  5. Step 5: Solve for x
    x = 91,246,374.09/13,776.86
  6. Step 6: Final answer
    x = 6,623.16

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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.