Home / 13,986.48-20,979.79-5,666.66

Finding the Fourth Proportional to 13,986.48, 20,979.79 and 5,666.66

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Solution

The fourth proportional to 13,986.48, 20,979.79 and 5,666.66 is: 8,500.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.48 : 20,979.79 = 5,666.66 : x
  2. Step 2: Convert to fraction form
    13,986.48/20,979.79 = 5,666.66/x
  3. Step 3: Cross multiply
    13,986.48x = 20,979.79 × 5,666.66
  4. Step 4: Simplify right side
    13,986.48x = 118,885,296.41
  5. Step 5: Solve for x
    x = 118,885,296.41/13,986.48
  6. Step 6: Final answer
    x = 8,500.01

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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.