Home / 13,339.76-20,010.66-3,979.06

Finding the Fourth Proportional to 13,339.76, 20,010.66 and 3,979.06

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Solution

The fourth proportional to 13,339.76, 20,010.66 and 3,979.06 is: 5,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.76 : 20,010.66 = 3,979.06 : x
  2. Step 2: Convert to fraction form
    13,339.76/20,010.66 = 3,979.06/x
  3. Step 3: Cross multiply
    13,339.76x = 20,010.66 × 3,979.06
  4. Step 4: Simplify right side
    13,339.76x = 79,623,616.78
  5. Step 5: Solve for x
    x = 79,623,616.78/13,339.76
  6. Step 6: Final answer
    x = 5,968.89

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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.