Home / 13,986.36-20,979.42-5,666.24

Finding the Fourth Proportional to 13,986.36, 20,979.42 and 5,666.24

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Solution

The fourth proportional to 13,986.36, 20,979.42 and 5,666.24 is: 8,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.36 : 20,979.42 = 5,666.24 : x
  2. Step 2: Convert to fraction form
    13,986.36/20,979.42 = 5,666.24/x
  3. Step 3: Cross multiply
    13,986.36x = 20,979.42 × 5,666.24
  4. Step 4: Simplify right side
    13,986.36x = 118,874,428.78
  5. Step 5: Solve for x
    x = 118,874,428.78/13,986.36
  6. Step 6: Final answer
    x = 8,499.31

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1.5x scale

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.